Primary Surveillance Radar (PSR) - Harmonised Standard for access to radio spectrum - Part 3: Air Traffic Control (ATC) PSR sensors operating in 8 500 MHz to 10 000 MHz frequency band (X band)

The present document specifies technical characteristics and methods of measurements for monostatic X-band radar
sensors intended for the surveillance of airspace traffic with the following characteristics:
• Operating in the frequency range 8 500 MHz to 10 000 MHz utilizing modulated pulses.
• The transceiver-antenna connection is using a hollow metallic rectangular waveguide.
• The antenna is rotating, waveguide-based and passive.
• At the transceiver output an RF-circulator is used.
NOTE 1: Since transceiver and antenna are hollow metallic rectangular waveguide based the frequency range for
measurements that needs to be addressed covers 6,56 GHz to 26 GHz. The lower limit of this frequency
range is obtained as cut-off frequency of the combination of WR112/R84 taper section and a WR90/R100
Waveguide IEC 60153-2 [i.3]. The upper limit corresponds to the upper limit stated in Table 1 of ERC
Recommendation 74-01 [2].
NOTE 2: Since at the transceiver output an RF circulator is used, it is assumed that the transceiver characteristics
remain independent from the antenna.
NOTE 3: Multi-static radars are not covered by the present document.
NOTE 4: The relationship between the present document and essential requirements of article 3.2 of Directive
2014/53/EU [i.1] is given in annex A.

Primarni nadzorni radar (PSR) - Harmonizirani standard za dostop do radijskega spektra - 3. del: Senzorji PSR za nadzor zračnega prometa (ATC), ki delujejo v frekvenčnem pasu od 8500 MHz do 10.000 MHz (pas X)

Ta dokument določa tehnične karakteristike in merilne metode za monostatična radarska tipala v frekvenčnem pasu X, namenjena za nadzor zračnega prometa, ki imajo naslednje značilnosti:
• Delovanje v frekvenčnih pasovih od 8500 MHz do 10.000 MHz z uporabo moduliranih pulzov.
• Antena oddajno-sprejemne naprave uporablja votel pravokoten kovinski valovod.
• Antena se pasivno vrti glede na valovod.
• Na izhodu oddajno-sprejemne naprave je uporabljena radiofrekvenčna obtočna črpalka.
OPOMBA 1: Ker sta oddajno-sprejemna naprava in antena votel kovinski pravokoten valovod, je frekvenčno območje za meritve od 6,56 do 26 GHz. Nižja spodnja vrednost tega frekvenčnega območja se pridobi kot mejna frekvenca kombinacije zoženega dela obtočne črpalke WR112/R84 in valovoda WR90/R100, kot je določeno v standardu IEC 60153-2 [i.3]. Zgornja meja ustreza zgornji meji, navedeni v preglednici 1 v priporočilu ERC 74-01 [2].
OPOMBA 2: Ker je na izhodu oddajno-sprejemne naprave uporabljena radiofrekvenčna obtočna črpalka, se predvideva, da so značilnosti oddajno-sprejemne naprave neodvisne od antene.
OPOMBA 3: Multistatični radarji niso zajeti v tem dokumentu.
OPOMBA 4: Razmerje med tem dokumentom in bistvenimi zahtevami člena 3.2 Direktive 2014/53/EU [i.1] je podano v dodatku A.

General Information

Status
Published
Public Enquiry End Date
31-May-2019
Publication Date
11-Aug-2019
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
24-Jul-2019
Due Date
28-Sep-2019
Completion Date
12-Aug-2019

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ETSI EN 303 364-3 V1.1.1 (2019-07)
HARMONISED EUROPEAN STANDARD
Primary Surveillance Radar (PSR);
Harmonised Standard for access to radio spectrum;
Part 3: Air Traffic Control (ATC) PSR sensors operating
in the frequency band 8 500 MHz to 10 000 MHz (X band)
---------------------- Page: 1 ----------------------
2 ETSI EN 303 364-3 V1.1.1 (2019-07)
Reference
DEN/ERM-TGAERO-31-3
Keywords
aeronautical, harmonised standard, radar, radio
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88
Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search

The present document may be made available in electronic versions and/or in print. The content of any electronic and/or

print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any

existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI

deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.

Users of the present document should be aware that the document may be subject to revision or change of status.

Information on the current status of this and other ETSI documents is available at

https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx

If you find errors in the present document, please send your comment to one of the following services:

https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification

No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying

and microfilm except as authorized by written permission of ETSI.

The content of the PDF version shall not be modified without the written authorization of ETSI.

The copyright and the foregoing restriction extend to reproduction in all media.
© ETSI 2019.
All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and

of the 3GPP Organizational Partners.

oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and

of the oneM2M Partners.
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI
---------------------- Page: 2 ----------------------
3 ETSI EN 303 364-3 V1.1.1 (2019-07)
Contents

Intellectual Property Rights ................................................................................................................................ 5

Foreword ............................................................................................................................................................. 5

Modal verbs terminology .................................................................................................................................... 6

1 Scope ........................................................................................................................................................ 7

2 References ................................................................................................................................................ 7

2.1 Normative references ......................................................................................................................................... 7

2.2 Informative references ........................................................................................................................................ 8

3 Definition of terms, symbols and abbreviations ....................................................................................... 8

3.1 Terms .................................................................................................................................................................. 8

3.2 Symbols .............................................................................................................................................................. 9

3.3 Abbreviations ..................................................................................................................................................... 9

4 Technical requirements specifications ................................................................................................... 10

4.1 Environmental profile ....................................................................................................................................... 10

4.2 Conformance requirements .............................................................................................................................. 10

4.2.1 Transmitter requirements ............................................................................................................................ 10

4.2.1.1 Frequency Tolerance ............................................................................................................................. 10

4.2.1.1.1 Definition......................................................................................................................................... 10

4.2.1.1.2 Limits .............................................................................................................................................. 10

4.2.1.1.3 Conformance ................................................................................................................................... 10

4.2.1.2 Measured B Bandwidth ..................................................................................................................... 10

-40

4.2.1.2.1 Definition......................................................................................................................................... 10

4.2.1.2.2 Limits .............................................................................................................................................. 10

4.2.1.2.3 Conformance ................................................................................................................................... 11

4.2.1.3 Out-of-band emissions .......................................................................................................................... 11

4.2.1.3.1 Definition......................................................................................................................................... 11

4.2.1.3.2 Limits .............................................................................................................................................. 11

4.2.1.3.3 Conformance ................................................................................................................................... 12

4.2.1.4 Spurious emissions ................................................................................................................................ 12

4.2.1.4.1 Definition......................................................................................................................................... 12

4.2.1.4.2 Limits .............................................................................................................................................. 13

4.2.1.4.3 Conformance ................................................................................................................................... 13

4.2.1.5 Stand-by Mode Emissions ..................................................................................................................... 14

4.2.1.5.1 Definition......................................................................................................................................... 14

4.2.1.5.2 Limits .............................................................................................................................................. 14

4.2.1.5.3 Conformance ................................................................................................................................... 14

4.2.2 Receiver requirements ................................................................................................................................ 14

4.2.2.1 System Noise Figure ............................................................................................................................. 14

4.2.2.1.1 Definition......................................................................................................................................... 14

4.2.2.1.2 Limits .............................................................................................................................................. 14

4.2.2.1.3 Conformance ................................................................................................................................... 14

4.2.2.2 Receiver Selectivity .............................................................................................................................. 14

4.2.2.2.1 Definition......................................................................................................................................... 14

4.2.2.2.2 Limit ................................................................................................................................................ 14

4.2.2.2.3 Conformance ................................................................................................................................... 14

4.2.2.3 Receiver Compression Level ................................................................................................................ 15

4.2.2.3.1 Definition......................................................................................................................................... 15

4.2.2.3.2 Limit ................................................................................................................................................ 15

4.2.2.3.3 Conformance ................................................................................................................................... 15

5 Testing for compliance with technical requirements .............................................................................. 15

5.0 General requirements ....................................................................................................................................... 15

5.1 Environmental conditions for testing ............................................................................................................... 15

5.1.1 Test Conditions ........................................................................................................................................... 15

5.1.2 Normal temperature and humidity .............................................................................................................. 15

5.1.3 Normal test power supply ........................................................................................................................... 16

ETSI
---------------------- Page: 3 ----------------------
4 ETSI EN 303 364-3 V1.1.1 (2019-07)

5.2 Interpretation of the measurements results ....................................................................................................... 16

5.3 Radio test suites ................................................................................................................................................ 16

5.3.1 Transmitter test specification ...................................................................................................................... 16

5.3.1.1 Frequency Tolerance ............................................................................................................................. 16

5.3.1.2 Transmitter power ................................................................................................................................. 16

5.3.1.3 Measured B bandwidth ...................................................................................................................... 16

-40

5.3.1.4 Out-of-Band-emissions ......................................................................................................................... 17

5.3.1.5 Spurious emissions ................................................................................................................................ 19

5.3.1.6 Stand-by Mode Emissions ..................................................................................................................... 19

5.3.2 Receiver test specification .......................................................................................................................... 20

5.3.2.1 System Noise Figure ............................................................................................................................. 20

5.3.2.1.0 General ............................................................................................................................................ 20

5.3.2.2 Receiver Selectivity .............................................................................................................................. 20

5.3.2.2.0 General ............................................................................................................................................ 20

5.3.2.2.1 Receiver Out-of-Band selectivity .................................................................................................... 21

5.3.2.3 Receiver Compression Level ................................................................................................................ 22

5.3.2.3.0 General ............................................................................................................................................ 22

5.3.2.3.1 Receiver Compression Level ........................................................................................................... 22

Annex A (informative): Relationship between the present document and the essential

requirements of Directive 2014/53/EU ......................................................... 23

Annex B (normative): Transmission power and unwanted emissions of radar systems with

indirect methods ............................................................................................. 24

Annex C (normative): Calculation of the -40 dB Bandwidth ........................................................... 25

Annex D (informative): Maximum Measurement Uncertainty .......................................................... 27

Annex E (informative): Bibliography ................................................................................................... 28

History .............................................................................................................................................................. 29

ETSI
---------------------- Page: 4 ----------------------
5 ETSI EN 303 364-3 V1.1.1 (2019-07)
Intellectual Property Rights
Essential patents

IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information

pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found

in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in

respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web

server (https://ipr.etsi.org/).

Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee

can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web

server) which are, or may be, or may become, essential to the present document.
Trademarks

The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.

ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no

right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does

not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.

Foreword

This Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic

compatibility and Radio spectrum Matters (ERM).

The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.5] to

provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation

of the laws of the Member States relating to the making available on the market of radio equipment and repealing

Directive 1999/5/EC [i.1].

Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with

the normative clauses of the present document given in table A.1 confers, within the limits of the scope of the present

document, a presumption of conformity with the corresponding essential requirements of that Directive, and associated

EFTA regulations.

The present document is part 3 of a multi-part deliverable covering Primary Surveillance Radars, as identified below:

Part 1: "Air Traffic Control (ATC) Primary Surveillance Radar sensors operating in 1 215 MHz to 1 400 MHz

frequency band (L band)";

Part 2: "Air Traffic Control (ATC) Primary Surveillance Radar sensors operating in 2 700 MHz to 3 100 MHz

frequency band (S band)";

Part 3: "Air Traffic Control (ATC) Primary Surveillance Radar sensors operating in 8 500 MHz to

10 000 MHz frequency band (X band)".
National transposition dates
Date of adoption of this EN: 17 June 2019
Date of latest announcement of this EN (doa): 30 September 2019
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 March 2020
Date of withdrawal of any conflicting National Standard (dow): 31 March 2020
ETSI
---------------------- Page: 5 ----------------------
6 ETSI EN 303 364-3 V1.1.1 (2019-07)
Modal verbs terminology

In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and

"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of

provisions).

"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI
---------------------- Page: 6 ----------------------
7 ETSI EN 303 364-3 V1.1.1 (2019-07)
1 Scope

The present document specifies technical characteristics and methods of measurements for monostatic X-band radar

sensors intended for the surveillance of airspace traffic with the following characteristics:

• Operating in the frequency range 8 500 MHz to 10 000 MHz utilizing modulated pulses.

• The transceiver-antenna connection is using a hollow metallic rectangular waveguide.

• The antenna is rotating, waveguide-based and passive.
• At the transceiver output an RF-circulator is used.

NOTE 1: Since transceiver and antenna are hollow metallic rectangular waveguide based the frequency range for

measurements that needs to be addressed covers 6,56 GHz to 26 GHz. The lower limit of this frequency

range is obtained as cut-off frequency of the combination of WR112/R84 taper section and a WR90/R100

Waveguide IEC 60153-2 [i.3]. The upper limit corresponds to the upper limit stated in Table 1 of ERC

Recommendation 74-01 [2].

NOTE 2: Since at the transceiver output an RF circulator is used, it is assumed that the transceiver characteristics

remain independent from the antenna.
NOTE 3: Multi-static radars are not covered by the present document.

NOTE 4: The relationship between the present document and essential requirements of article 3.2 of Directive

2014/53/EU [i.1] is given in annex A.
2 References
2.1 Normative references

References are specific, identified by date of publication and/or edition number or version number. Only the cited

version applies.

Referenced documents which are not found to be publicly available in the expected location might be found at

https://docbox.etsi.org/Reference/.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are necessary for the application of the present document.

[1] ECC Recommendation (02)05 (2012): "Unwanted emissions".

[2] ERC Recommendation 74-01 (2019): "Unwanted emissions in the spurious domain".

[3] ITU Radio Regulations (2016).

[4] Recommendation ITU-R M.1177-4 (04-2011): "Techniques for measurement of unwanted

emissions of radar systems".
ETSI
---------------------- Page: 7 ----------------------
8 ETSI EN 303 364-3 V1.1.1 (2019-07)
2.2 Informative references

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

referenced document (including any amendments) applies.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are not necessary for the application of the present document but they assist the

user with regard to a particular subject area.

[i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the

harmonisation of the laws of the Member States relating to the making available on the market of

radio equipment and repealing Directive 1999/5/EC.

[i.2] Merrill I. Skolnik: "Radar Handbook", 2nd Edition, McGraw Hill publications.

[i.3] IEC 60153-2 (Edition 2.0, 1974): "Hollow metallic waveguides. Part 2: Relevant specifications for

ordinary rectangular waveguides".

[i.4] Recommendation ITU-R SM.1541-6 (08/2015): "Unwanted emissions in the out-of-band domain".

[i.5] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request

to the European Committee for Electrotechnical Standardisation and to the European

Telecommunications Standards Institute as regards radio equipment in support of Directive

2014/53/EU of the European Parliament and of the Council.
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
active state: produces the authorized emission

allocated band: frequency span that regionally or nationally is allocated to one or more radio services on a primary or

secondary basis

NOTE: A table of national frequency allocations are normally available from the radio authority for each national

state. Also a generic frequency allocation table is available in the ITU Radio Regulations [3].

declared band: band or bands within which the product under test is declared to operate in the applicable operating

modes
NOTE 1: Will often correspond to an allocated band nationally.

NOTE 2: The declared band for a given region or country is always contained within the allocated band.

idle/standby state: where the transmitter is available for traffic, but is not in the active state

Minimum Detectable Signal (MDS): measure of the lowest detectable signal amplitude for a given signal type for a

given radar

NOTE: For solid state radars a processing gain can be associated with a received signal. This processing gain has

the effect of lowering the MDS level in comparison to a MDS which is based only on noise temperature.

MDS in the present document is defined as including the processing gain for the chosen test signal.

necessary bandwidth: width of the frequency band which is just sufficient to ensure the transmission of information at

the rate and with the quality required under specified conditions for a given class of emission

NOTE: This definition is taken from ITU Radio Regulations [3].
ETSI
---------------------- Page: 8 ----------------------
9 ETSI EN 303 364-3 V1.1.1 (2019-07)

occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the

mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission

NOTE 1: This definition is taken from ITU Radio Regulations [3].

NOTE 2: Unless otherwise specified in an Recommendation ITU-R for the appropriate class of emission, the value

of β/2 should be taken as 0,5 %.

operating mode: predefined configuration for a given service accessible to the operator of the radar system

NOTE 1: Several operating modes may be available.

NOTE 2: Changing operating mode might affect the radio characteristics of the radar system.

peak envelope power: average power supplied to the antenna transmission line by a transmitter during one radio

frequency cycle at the crest of the modulation envelope taken under normal operating conditions

NOTE: This definition is taken from ITU Radio Regulations [3].

product configuration: hardware variant of the same typology of system under test (e.g. different power outputs,

magnetrons)
pulse duration: time between the 50 % amplitude (voltage) points

pulse rise time: time taken for the leading edge of the pulse to increase from 10 % to 90 % of the maximum amplitude

(voltage)
3.2 Symbols
For the purposes of the present document, the following symbols apply:
B -40 dB bandwidth
-40
B Chirp bandwidth
B Necessary bandwidth
B 3 dB resolution bandwidth of transceiver
res
dB/dec dB per decade
dBpp dB with respect to peak power
D Detectability Factor (function of PD & Pfa)
no spur
k Boltzmann's constant
NF Noise Factor of the system
sys
P Probability of detection
P Probability of false alarm
P Pulse power of transmission
t Time
t Pulse duration
t Pulse rise time
T Temperature in Kelvin
T Pulse length (of individual chirp) in seconds
λ Wavelength
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alternating Current
EFTA European Free Trade Association
EN European Standard
FM Frequency Modulation
LNA Low Noise Amplifier
ETSI
---------------------- Page: 9 ----------------------
10 ETSI EN 303 364-3 V1.1.1 (2019-07)
MDS Minimum Detectable Signal
OoB Out-of-Band
PEP Peak Envelope Power
ppm part(s) per million
PSR Primary Surveillance Radar
RF Radio Frequency
WG WaveGuide
4 Technical requirements specifications
4.1 Environmental profile

The technical requirements of the present document apply under the environmental profile for operation of the

equipment, which shall be declared by the manufacturer, but as a minimum, shall be that specified in the test conditions

contained in the present document. The equipment shall comply with all the technical requirements of the present

document which are identified as applicable in annex A at all times when operating within the boundary limits of the

declared operational environmental profile.
4.2 Conformance requirements
4.2.1 Transmitter requirements
4.2.1.1 Frequency Tolerance
4.2.1.1.1 Definition

The transmitter of a pulsed radar produces microwave pulses, which cause a broad frequency spectrum, depending on

the pulse duration.

The frequency tolerance is the maximum permissible departure by the centre frequency of the frequency band occupied

by an emission from the assigned frequency or, by the characteristic frequency of an emission from the reference

frequency.
4.2.1.1.2 Limits

The frequency tolerance for radars shall not exceed 1 250 ppm as per appendix 2 of the ITU Radio Regulations [3].

4.2.1.1.3 Conformance
The conformance tests are specified in clause 5.3.1.1.
4.2.1.2 Measured B-40 Bandwidth
4.2.1.2.1 Definition

The measured -40 dB bandwidth (B ) is the measured bandwidth of the emission 40 dB below the measured PEP.

-40
4.2.1.2.2 Limits

The measured -40 dB bandwidth of the signal shall be contained completely within the declared band in all operating

modes.

In case of multiple carrier-frequencies, all measured -40 dB emissions shall be contained within the declared band.

NOTE: The declared band is always contained in the 8 500 MHz to 10 000 MHz frequency range.

ETSI
---------------------- Page: 10 ----------------------
11 ETSI EN 303 364-3 V1.1.1 (2019-07)
4.2.1.2.3 Conformance
The conformance tests are specified in clause 5.3.1.3.
4.2.1.3 Out-of-band emissions
4.2.1.3.1 Definition

Out-of-Band emissions refer to emissions in the region between the calculated -40 dB bandwidth and the spurious

region (see definition of spurious region in clause 4.2.1.4.1).

The Out-of-Band emission limits and the spurious emission limits are defined based on the effective -40 dB bandwidth.

Annex C contains the applicable formulae for calculating the -40 dB bandwidth.

For radars with multiple carrier frequencies, the overall emission mask is obtained by superimposing the emission

masks of each individual carrier frequency. An example can be seen in figure 1.
Figure 1: Example of superimposed (combined) mask from two carrier frequencies
4.2.1.3.2 Limits

The limits for the OoB spectrum mask shall be as specified in annex 2 of ECC Recommendation (02)05 [1].

The Out-of-Band emission limits are defined based on the -40 dB bandwidth (B ). The Out of Band mask rolls off at

-40

30 dB per decade, from the B bandwidth to the level specified for spurious emissions.

-40
For multi-freq
...

Draft ETSI EN 303 364-3 V1.1.0 (2019-03)
HARMONISED EUROPEAN STANDARD
Primary Surveillance Radar (PSR);
Harmonised Standard for access to radio spectrum;
Part 3: Air Traffic Control (ATC) PSR sensors operating
in 8 500 MHz to 10 000 MHz frequency band (X band)
---------------------- Page: 1 ----------------------
2 Draft ETSI EN 303 364-3 V1.1.0 (2019-03)
Reference
DEN/ERM-TGAERO-31-3
Keywords
aeronautical, harmonised standard, radar, radio
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88
Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search

The present document may be made available in electronic versions and/or in print. The content of any electronic and/or

print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any

existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI

deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.

Users of the present document should be aware that the document may be subject to revision or change of status.

Information on the current status of this and other ETSI documents is available at

https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx

If you find errors in the present document, please send your comment to one of the following services:

https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification

No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying

and microfilm except as authorized by written permission of ETSI.

The content of the PDF version shall not be modified without the written authorization of ETSI.

The copyright and the foregoing restriction extend to reproduction in all media.
© ETSI 2019.
All rights reserved.
TM TM TM

DECT , PLUGTESTS , UMTS and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

TM TM

3GPP and LTE are trademarks of ETSI registered for the benefit of its Members and

of the 3GPP Organizational Partners.

oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and

of the oneM2M Partners.
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI
---------------------- Page: 2 ----------------------
3 Draft ETSI EN 303 364-3 V1.1.0 (2019-03)
Contents

Intellectual Property Rights ................................................................................................................................ 5

Foreword ............................................................................................................................................................. 5

Modal verbs terminology .................................................................................................................................... 6

1 Scope ........................................................................................................................................................ 7

2 References ................................................................................................................................................ 7

2.1 Normative references ......................................................................................................................................... 7

2.2 Informative references ........................................................................................................................................ 8

3 Definition of terms, symbols and abbreviations ....................................................................................... 8

3.1 Terms .................................................................................................................................................................. 8

3.2 Symbols .............................................................................................................................................................. 9

3.3 Abbreviations ..................................................................................................................................................... 9

4 Technical requirements specifications ................................................................................................... 10

4.1 Environmental profile ....................................................................................................................................... 10

4.2 Conformance requirements .............................................................................................................................. 10

4.2.1 Transmitter requirements ............................................................................................................................ 10

4.2.1.1 Frequency Tolerance ............................................................................................................................. 10

4.2.1.1.1 Definition......................................................................................................................................... 10

4.2.1.1.2 Limits .............................................................................................................................................. 10

4.2.1.1.3 Conformance ................................................................................................................................... 10

4.2.1.2 Measured B Bandwidth ..................................................................................................................... 10

-40

4.2.1.2.1 Definition......................................................................................................................................... 10

4.2.1.2.2 Limits .............................................................................................................................................. 10

4.2.1.2.3 Conformance ................................................................................................................................... 11

4.2.1.3 Out-of-band emissions .......................................................................................................................... 11

4.2.1.3.1 Definition......................................................................................................................................... 11

4.2.1.3.2 Limits .............................................................................................................................................. 11

4.2.1.3.3 Conformance ................................................................................................................................... 12

4.2.1.4 Spurious emissions ................................................................................................................................ 12

4.2.1.4.1 Definition......................................................................................................................................... 12

4.2.1.4.2 Limits .............................................................................................................................................. 13

4.2.1.4.3 Conformance ................................................................................................................................... 14

4.2.1.5 Stand-by Mode Emissions ..................................................................................................................... 14

4.2.1.5.1 Definition......................................................................................................................................... 14

4.2.1.5.2 Limits .............................................................................................................................................. 14

4.2.1.5.3 Conformance ................................................................................................................................... 14

4.2.2 Receiver requirements ................................................................................................................................ 14

4.2.2.1 System Noise Figure ............................................................................................................................. 14

4.2.2.1.1 Definition......................................................................................................................................... 14

4.2.2.1.2 Limits .............................................................................................................................................. 14

4.2.2.1.3 Conformance ................................................................................................................................... 14

4.2.2.2 Receiver Selectivity .............................................................................................................................. 14

4.2.2.2.1 Definition......................................................................................................................................... 14

4.2.2.2.2 Limit ................................................................................................................................................ 14

4.2.2.2.3 Conformance ................................................................................................................................... 15

4.2.2.3 Receiver Compression Level ................................................................................................................ 15

4.2.2.3.1 Definition......................................................................................................................................... 15

4.2.2.3.2 Limit ................................................................................................................................................ 15

4.2.2.3.3 Conformance ................................................................................................................................... 15

5 Testing for compliance with technical requirements .............................................................................. 15

5.0 General requirements ....................................................................................................................................... 15

5.1 Environmental conditions for testing ............................................................................................................... 15

5.1.1 Test Conditions ........................................................................................................................................... 15

5.1.2 Normal temperature and humidity .............................................................................................................. 15

5.1.3 Normal test power supply ........................................................................................................................... 16

ETSI
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4 Draft ETSI EN 303 364-3 V1.1.0 (2019-03)

5.2 Interpretation of the measurements results ....................................................................................................... 16

5.3 Radio test suites ................................................................................................................................................ 16

5.3.1 Transmitter test specification ...................................................................................................................... 16

5.3.1.1 Frequency Tolerance ............................................................................................................................. 16

5.3.1.2 Transmitter power ................................................................................................................................. 16

5.3.1.3 Measured B bandwidth ...................................................................................................................... 16

-40

5.3.1.4 Out-of-Band-emissions ......................................................................................................................... 17

5.3.1.5 Spurious emissions ................................................................................................................................ 19

5.3.1.6 Stand-by Mode Emissions ..................................................................................................................... 19

5.3.2 Receiver test specification .......................................................................................................................... 20

5.3.2.1 System Noise Figure ............................................................................................................................. 20

5.3.2.1.0 General ............................................................................................................................................ 20

5.3.2.2 Receiver Selectivity .............................................................................................................................. 20

5.3.2.2.0 General ............................................................................................................................................ 20

5.3.2.2.1 Receiver Out-of-Band selectivity .................................................................................................... 21

5.3.2.3 Receiver Compression Level ................................................................................................................ 22

5.3.2.3.0 General ............................................................................................................................................ 22

5.3.2.3.1 Receiver Compression Level ........................................................................................................... 22

Annex A (informative): Relationship between the present document and the essential

requirements of Directive 2014/53/EU ......................................................... 23

Annex B (normative): Transmission power and unwanted emissions of radar systems with

indirect methods ............................................................................................. 24

Annex C (normative): Calculation of the -40 dB Bandwidth ........................................................... 25

Annex D (informative): Maximum Measurement Uncertainty .......................................................... 27

Annex E (informative): Bibliography ................................................................................................... 28

History .............................................................................................................................................................. 29

ETSI
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5 Draft ETSI EN 303 364-3 V1.1.0 (2019-03)
Intellectual Property Rights
Essential patents

IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information

pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found

in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in

respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web

server (https://ipr.etsi.org/).

Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee

can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web

server) which are, or may be, or may become, essential to the present document.
Trademarks

The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.

ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no

right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does

not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.

Foreword

This draft Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic

compatibility and Radio spectrum Matters (ERM), and is now submitted for the combined Public Enquiry and Vote

phase of the ETSI standards EN Approval Procedure.

The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.5] to

provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation

of the laws of the Member States relating to the making available on the market of radio equipment and repealing

Directive 1999/5/EC [i.1].

Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with

the normative clauses of the present document given in table A.1 confers, within the limits of the scope of the present

document, a presumption of conformity with the corresponding essential requirements of that Directive, and associated

EFTA regulations.

The present document is part 3 of a multi-part deliverable covering Primary Surveillance Radars, as identified below:

Part 1: "Air Traffic Control (ATC) Primary Surveillance Radar sensors operating in 1 215 MHz to 1 400 MHz

frequency band (L band)";

Part 2: "Air Traffic Control (ATC) Primary Surveillance Radar sensors operating in 2 700 MHz to 3 100 MHz

frequency band (S band)";

Part 3: "Air Traffic Control (ATC) Primary Surveillance Radar sensors operating in 8 500 MHz to

10 000 MHz frequency band (X band)".
National transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa

Date of withdrawal of any conflicting National Standard (dow): 6 months after doa

ETSI
---------------------- Page: 5 ----------------------
6 Draft ETSI EN 303 364-3 V1.1.0 (2019-03)
Modal verbs terminology

In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and

"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of

provisions).

"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI
---------------------- Page: 6 ----------------------
7 Draft ETSI EN 303 364-3 V1.1.0 (2019-03)
1 Scope

The present document specifies technical characteristics and methods of measurements for monostatic X-band radar

sensors intended for the surveillance of airspace traffic with the following characteristics:

• Operating in the frequency range 8 500 MHz to 10 000 MHz utilizing modulated pulses.

• The transceiver-antenna connection is using a hollow metallic rectangular waveguide.

• The antenna is rotating, waveguide-based and passive.
• At the transceiver output an RF-circulator is used.

NOTE 1: Since transceiver and antenna are hollow metallic rectangular waveguide based the frequency range for

measurements that needs to be addressed covers 6,56 GHz to 26 GHz. The lower limit of this frequency

range is obtained as cut-off frequency of the combination of WR112/R84 taper section and a WR90/R100

Waveguide IEC 60153-2 [i.3]. The upper limit corresponds to the upper limit stated in Table 1 of ERC

Recommendation 74-01 [2].

NOTE 2: Since at the transceiver output an RF circulator is used, it is assumed that the transceiver characteristics

remain independent from the antenna.
NOTE 3: Multi-static radars are not covered by the present document.

NOTE 4: The relationship between the present document and essential requirements of article 3.2 of Directive

2014/53/EU [i.1] is given in annex A.
2 References
2.1 Normative references

References are specific, identified by date of publication and/or edition number or version number. Only the cited

version applies.

Referenced documents which are not found to be publicly available in the expected location might be found at

https://docbox.etsi.org/Reference/.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are necessary for the application of the present document.

[1] ECC Recommendation (02)05 (2012): "Unwanted emissions".

[2] ERC Recommendation 74-01 (2011): "Unwanted emissions in the spurious domain".

[3] ITU Radio Regulations (2016).

[4] Recommendation ITU-R M.1177-4 (04-2011): "Techniques for measurement of unwanted

emissions of radar systems".
ETSI
---------------------- Page: 7 ----------------------
8 Draft ETSI EN 303 364-3 V1.1.0 (2019-03)
2.2 Informative references

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

referenced document (including any amendments) applies.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are not necessary for the application of the present document but they assist the

user with regard to a particular subject area.

[i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the

harmonisation of the laws of the Member States relating to the making available on the market of

radio equipment and repealing Directive 1999/5/EC.

[i.2] Merrill I. Skolnik: "Radar Handbook", 2nd Edition, McGraw Hill publications.

[i.3] IEC 60153-2 (Edition 2.0, 1974): "Hollow metallic waveguides. Part 2: Relevant specifications for

ordinary rectangular waveguides".

[i.4] Recommendation ITU-R SM.1541-6 (08/2015): "Unwanted emissions in the out-of-band domain".

[i.5] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request

to the European Committee for Electrotechnical Standardisation and to the European

Telecommunications Standards Institute as regards radio equipment in support of Directive

2014/53/EU of the European Parliament and of the Council.
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
active state: produces the authorized emission

allocated band: frequency span that regionally or nationally is allocated to one or more radio services on a primary or

secondary basis

NOTE: A table of national frequency allocations are normally available from the radio authority for each national

state. Also a generic frequency allocation table is available in the ITU Radio Regulations [3].

declared band: band or bands within which the product under test is declared to operate in the applicable operating

modes
NOTE 1: Will often correspond to an allocated band nationally.

NOTE 2: The declared band for a given region or country is always contained within the allocated band.

idle/standby state: where the transmitter is available for traffic, but is not in the active state

Minimum Detectable Signal (MDS): measure of the lowest detectable signal amplitude for a given signal type for a

given radar

NOTE: For solid state radars a processing gain can be associated with a received signal. This processing gain has

the effect of lowering the MDS level in comparison to a MDS which is based only on noise temperature.

MDS in the present document is defined as including the processing gain for the chosen test signal.

necessary bandwidth: width of the frequency band which is just sufficient to ensure the transmission of information at

the rate and with the quality required under specified conditions for a given class of emission

NOTE: This definition is taken from ITU Radio Regulations [3].
ETSI
---------------------- Page: 8 ----------------------
9 Draft ETSI EN 303 364-3 V1.1.0 (2019-03)

occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the

mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission

NOTE 1: This definition is taken from ITU Radio Regulations [3].

NOTE 2: Unless otherwise specified in an Recommendation ITU-R for the appropriate class of emission, the value

of β/2 should be taken as 0,5 %.

operating mode: predefined configuration for a given service accessible to the operator of the radar system

NOTE 1: Several operating modes may be available.

NOTE 2: Changing operating mode might affect the radio characteristics of the radar system.

peak envelope power: average power supplied to the antenna transmission line by a transmitter during one radio

frequency cycle at the crest of the modulation envelope taken under normal operating conditions

NOTE: This definition is taken from ITU Radio Regulations [3].

product configuration: hardware variant of the same typology of system under test (e.g. different power outputs,

magnetrons)
pulse duration: time between the 50 % amplitude (voltage) points

pulse rise time: time taken for the leading edge of the pulse to increase from 10 % to 90 % of the maximum amplitude

(voltage)
3.2 Symbols
For the purposes of the present document, the following symbols apply:
B -40 dB bandwidth
-40
B Chirp bandwidth
B Necessary bandwidth
B 3 dB resolution bandwidth of transceiver
res
dB/dec dB per decade
dBpp dB with respect to peak power
D Detectability Factor (function of PD & Pfa)
no spur
k Boltzmann's constant
NF Noise Factor of the system
sys
P Probability of detection
P Probability of false alarm
P Pulse power of transmission
t Time
t Pulse duration
t Pulse rise time
T Temperature in Kelvin
T Pulse length (of individual chirp) in seconds
λ Wavelength
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alternating Current
EFTA European Free Trade Association
EN European Standard
FM Frequency Modulation
LNA Low Noise Amplifier
ETSI
---------------------- Page: 9 ----------------------
10 Draft ETSI EN 303 364-3 V1.1.0 (2019-03)
MDS Minimum Detectable Signal
OoB Out-of-Band
PEP Peak Envelope Power
PSR Primary Surveillance Radar
RF Radio Frequency
WG WaveGuide
4 Technical requirements specifications
4.1 Environmental profile

The technical requirements of the present document apply under the environmental profile for operation of the

equipment, which shall be declared by the manufacturer, but as a minimum, shall be that specified in the test conditions

contained in the present document. The equipment shall comply with all the technical requirements of the present

document which are identified as applicable in annex A at all times when operating within the boundary limits of the

declared operational environmental profile.
4.2 Conformance requirements
4.2.1 Transmitter requirements
4.2.1.1 Frequency Tolerance
4.2.1.1.1 Definition

The transmitter of a pulsed radar produces microwave pulses, which cause a broad frequency spectrum, depending on

the pulse duration.

The frequency tolerance is the maximum permissible departure by the centre frequency of the frequency band occupied

by an emission from the assigned frequency or, by the characteristic frequency of an emission from the reference

frequency.
4.2.1.1.2 Limits

The frequency tolerance for radars shall not exceed 1 250 ppm as per appendix 2 of the ITU Radio Regulations [3].

4.2.1.1.3 Conformance
The conformance tests are specified in clause 5.3.1.1.
4.2.1.2 Measured B Bandwidth
-40
4.2.1.2.1 Definition

The measured -40 dB bandwidth (B ) is the measured bandwidth of the emission 40 dB below the measured PEP.

-40
4.2.1.2.2 Limits

The measured -40 dB bandwidth of the signal shall be contained completely within the declared band in all operating

modes.

In case of multiple carrier-frequencies, all measured -40 dB emissions shall be contained within the declared band.

NOTE: The declared band is always contained in the 8 500 MHz to 10 000 MHz frequency range.

ETSI
---------------------- Page: 10 ----------------------
11 Draft ETSI EN 303 364-3 V1.1.0 (2019-03)
4.2.1.2.3 Conformance
The conformance tests are specified in clause 5.3.1.3.
4.2.1.3 Out-of-band emissions
4.2.1.3.1 Definition

Out-of-Band emissions refer to emissions in the region between the calculated -40 dB bandwidth and the spurious

region (see definition of spurious region in clause 4.2.1.4.1).

The Out-of-Band emission limits and the spurious emission limits are defined based on the effective -40 dB bandwidth.

Annex C contains the applicable formulae for calculating the -40 dB bandwidth

For radars with multiple carrier frequencies, the overall emission mask is obtained by superimposing the emission

masks of each individual carrier frequency. An example can be seen in figure 1.
Figure 1: Example of superimposed (combined) mask from two carrier frequencies
4.2.1.3.2 Limits

The limits for the OoB spectrum mask shall be as specified in annex 2 of ECC Recommendation (02)05 [1].

The Out-of-Band emission limits are defined based on the -40 dB bandwidth (B ). The Out

...

SLOVENSKI STANDARD
SIST EN 303 364-3 V1.1.1:2019
01-september-2019
Primarni nadzorni radar (PSR) - Harmonizirani standard za dostop do radijskega
spektra - 3. del: Senzorji PSR za nadzor zračnega prometa (ATC), ki delujejo v
frekvenčnem pasu od 8500 MHz do 10.000 MHz (pas X)

Primary Surveillance Radar (PSR) - Harmonised Standard for access to radio spectrum -

Part 3: Air Traffic Control (ATC) PSR sensors operating in 8 500 MHz to 10 000 MHz

frequency band (X band)
Ta slovenski standard je istoveten z: ETSI EN 303 364-3 V1.1.1 (2019-07)
ICS:
03.220.50 Zračni transport Air transport
33.060.99 Druga oprema za radijske Other equipment for
komunikacije radiocommunications
SIST EN 303 364-3 V1.1.1:2019 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 303 364-3 V1.1.1:2019
---------------------- Page: 2 ----------------------
SIST EN 303 364-3 V1.1.1:2019
ETSI EN 303 364-3 V1.1.1 (2019-07)
HARMONISED EUROPEAN STANDARD
Primary Surveillance Radar (PSR);
Harmonised Standard for access to radio spectrum;
Part 3: Air Traffic Control (ATC) PSR sensors operating
in the frequency band 8 500 MHz to 10 000 MHz (X band)
---------------------- Page: 3 ----------------------
SIST EN 303 364-3 V1.1.1:2019
2 ETSI EN 303 364-3 V1.1.1 (2019-07)
Reference
DEN/ERM-TGAERO-31-3
Keywords
aeronautical, harmonised standard, radar, radio
ETSI
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Sous-Préfecture de Grasse (06) N° 7803/88
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ETSI
---------------------- Page: 4 ----------------------
SIST EN 303 364-3 V1.1.1:2019
3 ETSI EN 303 364-3 V1.1.1 (2019-07)
Contents

Intellectual Property Rights ................................................................................................................................ 5

Foreword ............................................................................................................................................................. 5

Modal verbs terminology .................................................................................................................................... 6

1 Scope ........................................................................................................................................................ 7

2 References ................................................................................................................................................ 7

2.1 Normative references ......................................................................................................................................... 7

2.2 Informative references ........................................................................................................................................ 8

3 Definition of terms, symbols and abbreviations ....................................................................................... 8

3.1 Terms .................................................................................................................................................................. 8

3.2 Symbols .............................................................................................................................................................. 9

3.3 Abbreviations ..................................................................................................................................................... 9

4 Technical requirements specifications ................................................................................................... 10

4.1 Environmental profile ....................................................................................................................................... 10

4.2 Conformance requirements .............................................................................................................................. 10

4.2.1 Transmitter requirements ............................................................................................................................ 10

4.2.1.1 Frequency Tolerance ............................................................................................................................. 10

4.2.1.1.1 Definition......................................................................................................................................... 10

4.2.1.1.2 Limits .............................................................................................................................................. 10

4.2.1.1.3 Conformance ................................................................................................................................... 10

4.2.1.2 Measured B Bandwidth ..................................................................................................................... 10

-40

4.2.1.2.1 Definition......................................................................................................................................... 10

4.2.1.2.2 Limits .............................................................................................................................................. 10

4.2.1.2.3 Conformance ................................................................................................................................... 11

4.2.1.3 Out-of-band emissions .......................................................................................................................... 11

4.2.1.3.1 Definition......................................................................................................................................... 11

4.2.1.3.2 Limits .............................................................................................................................................. 11

4.2.1.3.3 Conformance ................................................................................................................................... 12

4.2.1.4 Spurious emissions ................................................................................................................................ 12

4.2.1.4.1 Definition......................................................................................................................................... 12

4.2.1.4.2 Limits .............................................................................................................................................. 13

4.2.1.4.3 Conformance ................................................................................................................................... 13

4.2.1.5 Stand-by Mode Emissions ..................................................................................................................... 14

4.2.1.5.1 Definition......................................................................................................................................... 14

4.2.1.5.2 Limits .............................................................................................................................................. 14

4.2.1.5.3 Conformance ................................................................................................................................... 14

4.2.2 Receiver requirements ................................................................................................................................ 14

4.2.2.1 System Noise Figure ............................................................................................................................. 14

4.2.2.1.1 Definition......................................................................................................................................... 14

4.2.2.1.2 Limits .............................................................................................................................................. 14

4.2.2.1.3 Conformance ................................................................................................................................... 14

4.2.2.2 Receiver Selectivity .............................................................................................................................. 14

4.2.2.2.1 Definition......................................................................................................................................... 14

4.2.2.2.2 Limit ................................................................................................................................................ 14

4.2.2.2.3 Conformance ................................................................................................................................... 14

4.2.2.3 Receiver Compression Level ................................................................................................................ 15

4.2.2.3.1 Definition......................................................................................................................................... 15

4.2.2.3.2 Limit ................................................................................................................................................ 15

4.2.2.3.3 Conformance ................................................................................................................................... 15

5 Testing for compliance with technical requirements .............................................................................. 15

5.0 General requirements ....................................................................................................................................... 15

5.1 Environmental conditions for testing ............................................................................................................... 15

5.1.1 Test Conditions ........................................................................................................................................... 15

5.1.2 Normal temperature and humidity .............................................................................................................. 15

5.1.3 Normal test power supply ........................................................................................................................... 16

ETSI
---------------------- Page: 5 ----------------------
SIST EN 303 364-3 V1.1.1:2019
4 ETSI EN 303 364-3 V1.1.1 (2019-07)

5.2 Interpretation of the measurements results ....................................................................................................... 16

5.3 Radio test suites ................................................................................................................................................ 16

5.3.1 Transmitter test specification ...................................................................................................................... 16

5.3.1.1 Frequency Tolerance ............................................................................................................................. 16

5.3.1.2 Transmitter power ................................................................................................................................. 16

5.3.1.3 Measured B bandwidth ...................................................................................................................... 16

-40

5.3.1.4 Out-of-Band-emissions ......................................................................................................................... 17

5.3.1.5 Spurious emissions ................................................................................................................................ 19

5.3.1.6 Stand-by Mode Emissions ..................................................................................................................... 19

5.3.2 Receiver test specification .......................................................................................................................... 20

5.3.2.1 System Noise Figure ............................................................................................................................. 20

5.3.2.1.0 General ............................................................................................................................................ 20

5.3.2.2 Receiver Selectivity .............................................................................................................................. 20

5.3.2.2.0 General ............................................................................................................................................ 20

5.3.2.2.1 Receiver Out-of-Band selectivity .................................................................................................... 21

5.3.2.3 Receiver Compression Level ................................................................................................................ 22

5.3.2.3.0 General ............................................................................................................................................ 22

5.3.2.3.1 Receiver Compression Level ........................................................................................................... 22

Annex A (informative): Relationship between the present document and the essential

requirements of Directive 2014/53/EU ......................................................... 23

Annex B (normative): Transmission power and unwanted emissions of radar systems with

indirect methods ............................................................................................. 24

Annex C (normative): Calculation of the -40 dB Bandwidth ........................................................... 25

Annex D (informative): Maximum Measurement Uncertainty .......................................................... 27

Annex E (informative): Bibliography ................................................................................................... 28

History .............................................................................................................................................................. 29

ETSI
---------------------- Page: 6 ----------------------
SIST EN 303 364-3 V1.1.1:2019
5 ETSI EN 303 364-3 V1.1.1 (2019-07)
Intellectual Property Rights
Essential patents

IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information

pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found

in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in

respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web

server (https://ipr.etsi.org/).

Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee

can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web

server) which are, or may be, or may become, essential to the present document.
Trademarks

The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.

ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no

right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does

not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.

Foreword

This Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic

compatibility and Radio spectrum Matters (ERM).

The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.5] to

provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation

of the laws of the Member States relating to the making available on the market of radio equipment and repealing

Directive 1999/5/EC [i.1].

Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with

the normative clauses of the present document given in table A.1 confers, within the limits of the scope of the present

document, a presumption of conformity with the corresponding essential requirements of that Directive, and associated

EFTA regulations.

The present document is part 3 of a multi-part deliverable covering Primary Surveillance Radars, as identified below:

Part 1: "Air Traffic Control (ATC) Primary Surveillance Radar sensors operating in 1 215 MHz to 1 400 MHz

frequency band (L band)";

Part 2: "Air Traffic Control (ATC) Primary Surveillance Radar sensors operating in 2 700 MHz to 3 100 MHz

frequency band (S band)";

Part 3: "Air Traffic Control (ATC) Primary Surveillance Radar sensors operating in 8 500 MHz to

10 000 MHz frequency band (X band)".
National transposition dates
Date of adoption of this EN: 17 June 2019
Date of latest announcement of this EN (doa): 30 September 2019
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 March 2020
Date of withdrawal of any conflicting National Standard (dow): 31 March 2020
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Modal verbs terminology

In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and

"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of

provisions).

"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

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1 Scope

The present document specifies technical characteristics and methods of measurements for monostatic X-band radar

sensors intended for the surveillance of airspace traffic with the following characteristics:

• Operating in the frequency range 8 500 MHz to 10 000 MHz utilizing modulated pulses.

• The transceiver-antenna connection is using a hollow metallic rectangular waveguide.

• The antenna is rotating, waveguide-based and passive.
• At the transceiver output an RF-circulator is used.

NOTE 1: Since transceiver and antenna are hollow metallic rectangular waveguide based the frequency range for

measurements that needs to be addressed covers 6,56 GHz to 26 GHz. The lower limit of this frequency

range is obtained as cut-off frequency of the combination of WR112/R84 taper section and a WR90/R100

Waveguide IEC 60153-2 [i.3]. The upper limit corresponds to the upper limit stated in Table 1 of ERC

Recommendation 74-01 [2].

NOTE 2: Since at the transceiver output an RF circulator is used, it is assumed that the transceiver characteristics

remain independent from the antenna.
NOTE 3: Multi-static radars are not covered by the present document.

NOTE 4: The relationship between the present document and essential requirements of article 3.2 of Directive

2014/53/EU [i.1] is given in annex A.
2 References
2.1 Normative references

References are specific, identified by date of publication and/or edition number or version number. Only the cited

version applies.

Referenced documents which are not found to be publicly available in the expected location might be found at

https://docbox.etsi.org/Reference/.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are necessary for the application of the present document.

[1] ECC Recommendation (02)05 (2012): "Unwanted emissions".

[2] ERC Recommendation 74-01 (2019): "Unwanted emissions in the spurious domain".

[3] ITU Radio Regulations (2016).

[4] Recommendation ITU-R M.1177-4 (04-2011): "Techniques for measurement of unwanted

emissions of radar systems".
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2.2 Informative references

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

referenced document (including any amendments) applies.

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

The following referenced documents are not necessary for the application of the present document but they assist the

user with regard to a particular subject area.

[i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the

harmonisation of the laws of the Member States relating to the making available on the market of

radio equipment and repealing Directive 1999/5/EC.

[i.2] Merrill I. Skolnik: "Radar Handbook", 2nd Edition, McGraw Hill publications.

[i.3] IEC 60153-2 (Edition 2.0, 1974): "Hollow metallic waveguides. Part 2: Relevant specifications for

ordinary rectangular waveguides".

[i.4] Recommendation ITU-R SM.1541-6 (08/2015): "Unwanted emissions in the out-of-band domain".

[i.5] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request

to the European Committee for Electrotechnical Standardisation and to the European

Telecommunications Standards Institute as regards radio equipment in support of Directive

2014/53/EU of the European Parliament and of the Council.
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
active state: produces the authorized emission

allocated band: frequency span that regionally or nationally is allocated to one or more radio services on a primary or

secondary basis

NOTE: A table of national frequency allocations are normally available from the radio authority for each national

state. Also a generic frequency allocation table is available in the ITU Radio Regulations [3].

declared band: band or bands within which the product under test is declared to operate in the applicable operating

modes
NOTE 1: Will often correspond to an allocated band nationally.

NOTE 2: The declared band for a given region or country is always contained within the allocated band.

idle/standby state: where the transmitter is available for traffic, but is not in the active state

Minimum Detectable Signal (MDS): measure of the lowest detectable signal amplitude for a given signal type for a

given radar

NOTE: For solid state radars a processing gain can be associated with a received signal. This processing gain has

the effect of lowering the MDS level in comparison to a MDS which is based only on noise temperature.

MDS in the present document is defined as including the processing gain for the chosen test signal.

necessary bandwidth: width of the frequency band which is just sufficient to ensure the transmission of information at

the rate and with the quality required under specified conditions for a given class of emission

NOTE: This definition is taken from ITU Radio Regulations [3].
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occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the

mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission

NOTE 1: This definition is taken from ITU Radio Regulations [3].

NOTE 2: Unless otherwise specified in an Recommendation ITU-R for the appropriate class of emission, the value

of β/2 should be taken as 0,5 %.

operating mode: predefined configuration for a given service accessible to the operator of the radar system

NOTE 1: Several operating modes may be available.

NOTE 2: Changing operating mode might affect the radio characteristics of the radar system.

peak envelope power: average power supplied to the antenna transmission line by a transmitter during one radio

frequency cycle at the crest of the modulation envelope taken under normal operating conditions

NOTE: This definition is taken from ITU Radio Regulations [3].

product configuration: hardware variant of the same typology of system under test (e.g. different power outputs,

magnetrons)
pulse duration: time between the 50 % amplitude (voltage) points

pulse rise time: time taken for the leading edge of the pulse to increase from 10 % to 90 % of the maximum amplitude

(voltage)
3.2 Symbols
For the purposes of the present document, the following symbols apply:
B -40 dB bandwidth
-40
B Chirp bandwidth
B Necessary bandwidth
B 3 dB resolution bandwidth of transceiver
res
dB/dec dB per decade
dBpp dB with respect to peak power
D Detectability Factor (function of PD & Pfa)
no spur
k Boltzmann's constant
NF Noise Factor of the system
sys
P Probability of detection
P Probability of false alarm
P Pulse power of transmission
t Time
t Pulse duration
t Pulse rise time
T Temperature in Kelvin
T Pulse length (of individual chirp) in seconds
λ Wavelength
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alternating Current
EFTA European Free Trade Association
EN European Standard
FM Frequency Modulation
LNA Low Noise Amplifier
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MDS Minimum Detectable Signal
OoB Out-of-Band
PEP Peak Envelope Power
ppm part(s) per million
PSR Primary Surveillance Radar
RF Radio Frequency
WG WaveGuide
4 Technical requirements specifications
4.1 Environmental profile

The technical requirements of the present document apply under the environmental profile for operation of the

equipment, which shall be declared by the manufacturer, but as a minimum, shall be that specified in the test conditions

contained in the present document. The equipment shall comply with all the technical requirements of the present

document which are identified as applicable in annex A at all times when operating within the boundary limits of the

declared operational environmental profile.
4.2 Conformance requirements
4.2.1 Transmitter requirements
4.2.1.1 Frequency Tolerance
4.2.1.1.1 Definition

The transmitter of a pulsed radar produces microwave pulses, which cause a broad frequency spectrum, depending on

the pulse duration.

The frequency tolerance is the maximum permissible departure by the centre frequency of the frequency band occupied

by an emission from the assigned frequency or, by the characteristic frequency of an emission from the reference

frequency.
4.2.1.1.2 Limits

The frequency tolerance for radars shall not exceed 1 250 ppm as per appendix 2 of the ITU Radio Regulations [3].

4.2.1.1.3 Conformance
The conformance tests are specified in clause 5.3.1.1.
4.2.1.2 Measured B-40 Bandwidth
4.2.1.2.1 Definition

The measured -40 dB bandwidth (B ) is the measured bandwidth of the emission 40 dB below the measured PEP.

-40
4.2.1.2.2 Limits

The measured -40 dB bandwidth of the signal shall be contained completely within the declared band in all operating

modes.

In case of multiple carrier-frequencies, all measured -40 dB emissions shall be contained within the declared band.

NOTE: The
...

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