SIST EN 301 842-3 V1.3.1:2011
(Main)VHF air-ground digital Link (VDL) Mode 4 radio equipment - Technical characteristics and methods of measurement for ground-based equipment - Part 3: Additional broadband aspects
VHF air-ground digital Link (VDL) Mode 4 radio equipment - Technical characteristics and methods of measurement for ground-based equipment - Part 3: Additional broadband aspects
The present document applies to the following radio equipment types:
-Very High Frequency (VHF) Digital Link (VDL) Mode 4 ground-based radio transmitters and receivers for air-ground communications operating in the VHF band, using Gaussian-filtered Frequency Shift Keying (GFSK) Modulation with 25 kHz channel spacing and capable of tuning to any of the 25 kHz channels from 118,000 MHz to 136,975 MHz as defined in ICAO VHF Digital Link (VDL) Standards and Recommended Practices (SARPs) [i.4].
The present document provides part 3 of the technical specifications.
The present document is designed to ensure that equipment certified to it will be compatible with the relevant ICAO VHF Digital Link (VDL) Standards and Recommended Practices (SARPs) [i.4] and VDL Mode 4 Technical Manual (TM) [i.1].
Manufacturers should note that in future the tuning range for the ground transceivers may also cover any 25 kHz channel from 108,000 MHz to 117,975 MHz.
The scope of the present document is limited to ground stations. The equivalent specification for airborne stations is EN 302 842 [6], [7], [8] and [9].
A description of the scope of the VDL Mode 4 system is provided in EN 301 842-2 [3], clause 1.
EN 301 842-1 [2] deals with tests of the physical layer. EN 301 842-2 [3] deals with tests of the link layer sufficient to support broadcast functionality including requirements and tests sufficient to recognize and respond to transmissions associated with point-to-point communication. The present document provides technical specifications for a VDL Mode 4 ground-based transceiver supporting a full Automatic Dependent Surveillance-Broadcast (ADS-B) capability and, optionally, the additional functionality of either, or a combination of, the following services:
-Traffic Information Service-Broadcast (TIS-B);
-Flight Information Service-Broadcast (FIS-B);
-GNSS Augmentation Service-Broadcast (GNS-B).
The TIS-B, FIS-B or GNS-B functionality in the ground-based equipment is expected to be provided by a TIS-B, FIS B or GNS-B processor, which could be contained within the VDL Mode 4 transceiver, but could also be housed in a separate physical unit. Therefore to support TIS-B, FIS-B or GNS-B, the minimum functionality demanded of a basic VDL Mode 4 ground-based transceiver unit (i.e. one that does not have a TIS-B, FIS-B or GNS-B processor housed within it) is to receive, from the TIS-B, FIS-B or GNS-B processor, all messages to be transmitted, and to transmit them. In the case of FIS-B there is an additional requirement to receive report request messages (from other VDL4 stations) and to pass those messages to the FIS-B processor.
It should be noted that the specifications for TIS-B, FIS-B and GNS-B in the present document represent a first step towards defining these applications, based on the work carried out as part of the NUP and MEDUP Programmes, and changes to the specifications for these services may therefore occur in the future.
The present document is organized as follows:
-clause 2 provides references to relevant documents;
-clause 3 provides general definitions, abbreviations and symbols used;
-clause 4 describes the VDL Mode 4 ground station functionality to support ADS-B, TIS-B, FIS-B and GNS B;
-clause 5 provides performance specifications for the VDL Mode 4 ground station supporting ADS-B, TIS-B, FIS-B and GNS-B Services;
-clause 6 provides general design requirements;
-clause 7 provides protocol tests which emphasis the ADS-B, TIS-B, FIS-B and GNS-B functions of the system;
-annex A provides a detailed cross-reference to the relevant requirements contained in [i.1];
-annex B provides a Bibliography;
-a document history.
Radijska oprema za VHF digitalne povezave zrak-tla, 4. način - Tehnične karakteristike in merilne metode za talno opremo - 3. del: Dodatni vidiki v zvezi z radiodifuzijo
Ta dokument velja za naslednje vrste radijske opreme:
- zelo visokofrekvenčna (VHF) digitalna povezava (VDL), 4. način, talnih radijskih oddajnikov in prejemnikov za komunikacije zrak-tla, ki deluje v pasu VHF z uporabo modulacije frekvenčnega premičnega kodiranja prek filtra Gaussian (GFSK) z razmikom 25 kHz med kanali, in zmožna uravnavati na katerem koli izmed kanalov 25 kHz od 118.000 MHz do 136.975 MHz, kot je opredeljeno v standardih in priporočenih praksah (SARPs) [i.4] IACO za digitalne povezave (VDL).
Ta dokument zagotavlja 3. del tehničnih specifikacij.
Ta dokument zagotavlja, da bo oprema, ki jo certificira, združljiva z ustreznimi standardi in priporočenimi praksami (SARPs) [i.4] ICAO za digitalne povezave VHF (VDL) ter tehničnim priročnikom (TM) [i.1] za VDL, 4. način.
Proizvajalci morajo biti pozorni, da razpon uravnavanja za talne prejemnike-oddajnike lahko v prihodnje zajema tudi kateri koli kanal 25 kHz od 108.000 MHz do 117.975 MHz.
Področje uporabe tega dokumenta je omejeno na talne postaje. Ustrezna specifikacija za letalske postaje je v EN 302 842 [6], [7], [8] in [9].
Opis področja uporabe sistemov VDL, 4. način, je naveden v EN 301 842-2 [3], točki 1.
EN 301 842-1 [2] obravnava preskuse fizične plasti. EN 301 842-2 [3] obravnava preskuse plasti povezave, zadostne za podporo oddajni funkcionalnosti, vključno z zahtevami in preskusi, zadostnimi za prepoznavo in odgovor na oddajanja, povezana s komunikacijo točka-točka. Ta dokument podaja tehnične specifikacije za talne oddajnike in sprejemnike VDL, 4. način, ki podpirajo zmožnosti popolnega samodejnega odvisnega nadzora oddajanja (ADS-B), in opcijsko, dodatne funkcionalnosti ali kombinacijo naslednjih storitev:
- storitev prometnih informacij - oddajanje (TIS-B);
- storitev informacij o letih - oddajanje (FIS-B);
- GNSS razširjene storitve informacij - oddajanje (GNS-B).
Za funkcionalnost v talni opremi TIS-B, FIS-B ali GNS-B se pričakuje, da jo zagotavljajo procesorji TIS-B, FIS-B ali GNS-B, ki so lahko vgrajeni v oddajnik in sprejemnik VDL, 4. način, vendar so prav tako lahko vgrajeni v ločeni fizični enoti. Zato je za podporo TIS-B, FIS-B ali GNS-B minimalna zahtevana funkcionalnost osnovnih talnih sprejemnih in oddajnih enot VDL, 4. način (tj. če procesor TIS-B, FIS-B ali GNS-B ni vgrajen) sprejeti vsa sporočila procesorjev za oddajanje TIS-B, FIS-B ali GNS-B in jih oddajati. Pri FIS-B je dodatna zahteva sprejemanje sporočil za poročanje zahtev (od drugih postaj VDL4) in predajanje teh sporočil procesorju FIS-B.
Upoštevati pa je treba, da specifikacije za TIS-B, FIS-B in GNS-B v tem dokumentu predstavljajo prvi korak k določanju teh uporab, temelječih na delu, izpeljanem kot del programov NUP in MEDUP, zato lahko pride do sprememb specifikacij za te storitve v prihodnosti.
Ta dokument je urejen:
- točka 2, ki se sklicuje na ustrezne dokumente;
- točka 3, ki podaja uporabljene splošne definicije, okrajšave in simbole;
- točka 4 opisuje funkcionalnosti talne postaje VDL, 4. način, za podporo ADS-B, TIS-B, FIS-B in GNS-B;
- točka 5 podaja delovne specifikacije talne postaje VDL, 4. način, za podporo ADS-B, TIS-B, FIS-B in GNS-B storitev;
- točka 6, ki podaja splošne zahteve za načrtovanje;
- točka 7 podaja preskuse protokola, ki poudarjajo funkcije sistema ADS-B, TIS-B, FIS-B in GNS-B;
- dodatek A, ki podaja podrobno sklicevanje na ustrezne zahteve, zajete v [i.1];
- dodatek B, ki podaja bibliografijo;
- zgodovino dokumenta.
Bodite pozorni na to, da lahko sistem podpira zelo širok razpon funkcij. Podajanje nekaterih preskusov za vse vidike funkcionalnosti ni praktično. Namen uporabljenega pristopa je podati podrobne preskuse za jedrno funkcionalnost za podporo ADS-S, FIS-B, TIS-B in GNS-B, osredotočenega na sistemske zahteve, ki lahko, če se narobe izvajajo, povzročijo poslabšanje storitev, ki jih ponujajo postaje VDL, 4. način.
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.KQLþQHUDGLRGLIX]LMRVHF air-ground digital Link (VDL) Mode 4 radio equipment - Technical characteristics and methods of measurement for ground-based equipment - Part 3: Additional broadband aspects49.090On-board equipment and instruments33.060.99Druga oprema za radijske komunikacijeOther equipment for radiocommunicationsICS:Ta slovenski standard je istoveten z:EN 301 842-3 Version 1.3.1SIST EN 301 842-3 V1.3.1:2011en01-november-2011SIST EN 301 842-3 V1.3.1:2011SLOVENSKI
STANDARD
SIST EN 301 842-3 V1.3.1:2011
ETSI EN 301 842-3 V1.3.1 (2011-09) VHF air-ground Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for ground-based equipment; Part 3: Additional broadcast aspects
European Standard SIST EN 301 842-3 V1.3.1:2011
ETSI ETSI EN 301 842-3 V1.3.1 (2011-09) 2
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DECTTM, PLUGTESTSTM, UMTSTM and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE™ are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association. SIST EN 301 842-3 V1.3.1:2011
ETSI ETSI EN 301 842-3 V1.3.1 (2011-09) 3 Contents Intellectual Property Rights . 5 Foreword . 5 Introduction . 6 1 Scope . 7 2 References. . 8 2.1 Normative references . 8 2.2 Informative references . 9 3 Definitions and abbreviations . 9 3.1 Definitions . 9 3.1.1 Basic reference model definitions . 9 3.1.2 Service conventions definitions . 9 3.1.3 General definitions . 10 3.2 Abbreviations . 10 4 General description of VDL Mode 4 ground station link layer . 12 4.1 General . 12 4.2 Automatic Dependant Surveillance-Broadcast . 12 4.3 Traffic Information Service-Broadcast . 13 4.4 Flight Information Service-Broadcast . 14 4.5 GNSS Augmentation Service-Broadcast (GNS-B) . 15 4.6 Ground Station Coordination . 15 5 Minimum performance specification under standard test conditions . 16 5.1 Requirements for ADS-B . 16 5.1.1 Information Field Formats . 16 5.1.2 ADS-B Request . 26 5.1.2.1 ADS-B request format. 26 5.1.2.2 Sleep Mode . 26 5.1.2.3 Automatic Selection of Variable Information Fields . 26 5.1.3 Default ADS-B Reporting . 29 5.1.4 ADS-B Procedures . 29 5.1.5 CTRL Parameters . 29 5.1.5.1 Directory of Service (DOS) message . 29 5.1.5.2 Channel Management Parameter . 30 5.1.6 Definitions for Compact Position Reporting . 39 5.1.6.1 Information Field Offset Encoding . 39 5.1.6.2 Information Field Offset Decoding . 41 5.1.6.3 Patch ID Encoding . 42 5.1.6.4 Patch ID Decoding . 42 5.1.7 Encoding of UDATA (udid) . 43 5.2 Requirements for TIS-B . 43 5.2.1 Traffic Information Volume (TIV) . 43 5.2.2 Message transmission . 44 5.2.2.1 Management messages . 44 5.2.2.2 Target messages . 44 5.2.2.3 Airport operation . 44 5.2.3 Message format . 45 5.2.4 Management message . 46 5.2.5 Aircraft target messages (airborne TIV) . 48 5.2.6 Aircraft target messages (ground TIV) . 50 5.2.7 Ground vehicle target messages (ground TIV) . 51 5.2.8 TIS-B offset encoding . 52 5.3 Requirements for FIS-B . 55 5.3.1 Message format . 55 5.3.2 Meteorological Aerodrome Report (METAR) message . 56 SIST EN 301 842-3 V1.3.1:2011
ETSI ETSI EN 301 842-3 V1.3.1 (2011-09) 4 5.3.3 Special Observations and Reports (SPECI) message . 64 5.3.4 Automatic Terminal Information Service (ATIS) message . 65 5.3.5 Runway Condition (RCN) message . 68 5.3.6 SIGnificant METeorological Information (SIGMET) message . 72 5.3.7 Temporary Segregated Areas (TSA) message . 73 5.3.8 FIS-B report request message . 76 5.3.9 Ground system functions . 77 5.4 Requirements for GNSS Augmentation Service Broadcast (GNS-B) message . 78 5.4.1 Message format . 78 5.4.2 Message Type 1 . 78 5.4.3 Message Type 2 . 82 5.4.4 Message Type 4 . 86 5.4.5 CRC Calculation . 92 5.4.5.1 GNS-B CRC . 92 5.4.5.2 FAS CRC . 92 5.4.5.3 Ephemeris CRC . 93 6 General design requirements . 93 7 Protocol test procedures . 93 7.1 General . 93 7.2 Required test rig . 94 7.3 Protocol test-suite description methodology . 96 7.4 Detailed protocol test procedures . 96 7.4.1 Test-suite overview . 96 7.4.2 Declarations . 98 7.4.3 Constraints . 98 7.4.3.1 Abbreviations . 98 7.4.3.1.1 Subfield mnemonics . 99 7.4.3.1.2 Station addresses and positions . 102 7.4.3.1.3 Tables of values for use in CPR test cases . 103 7.4.3.1.4 Tables of values for use in content checking test cases . 113 7.4.3.1.5 VDL4 Burst formats . 147 7.4.3.2 Test cases . 183 7.4.3.2.1 Test case macros . 184 7.4.3.2.2 Test case descriptions . 185 Annex A (informative): Cross reference matrix . 257 Annex B (informative): Bibliography . 267 History . 273
SIST EN 301 842-3 V1.3.1:2011
ETSI ETSI EN 301 842-3 V1.3.1 (2011-09) 5 Intellectual Property Rights IPRs essential or potentially essential to the present document 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 (http://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. Foreword This European Standard (EN) has been produced by ETSI Technical Committee Aeronautics (AERO). The present document is part 3 of a multi-part deliverable covering the VHF air-ground Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for ground-based equipment, as identified below: Part 1: "EN for ground equipment"; Part 2: "General description and data link layer"; Part 3: "Additional broadcast aspects"; Part 4: "Point-to-point functions"; Part 5: "Harmonized EN covering the essential requirements of article 3.2 of the R&TTE Directive". The present document is accompanied by an equivalent airborne standard, EN 302 842 [6], [7], [8] and [9] parts 1-4, covering the VHF air-ground Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for airborne equipment. NOTE: Following the decision taken at the ICAO Aeronautical Communication Panel's WG/M (Bangkok, February 2011), it remains to be seen if ICAO Annex 10 Vol III will be amended changing the recommended tuning frequency range from 108-117,975 MHz to 112-117,975 MHz. The present document will be updated accordingly if the amendment is accepted and made publicly available.
National transposition dates Date of adoption of this EN: 19 September 2011 Date of latest announcement of this EN (doa): 31 December 2011 Date of latest publication of new National Standard or endorsement of this EN (dop/e):
30 June 2012 Date of withdrawal of any conflicting National Standard (dow): 30 June 2012
SIST EN 301 842-3 V1.3.1:2011
ETSI ETSI EN 301 842-3 V1.3.1 (2011-09) 6 Introduction The present document is part of a set of deliverables developed by ETSI and is designed to fit in a modular structure to cover all radio and telecommunications terminal equipment within the scope of the R&TTE Directive [i.5]. The modular structure is shown in EG 201 399 [i.7]. The present document states the technical specifications for Very High Frequency (VHF) Digital Link (VDL) Mode 4 ground-based radio transmitters, transceivers and receivers for air-ground communications operating in the VHF band, using Gaussian-filtered Frequency Shift Keying (GFSK) Modulation with 25 kHz channel spacing and capable of tuning to any of the 25 kHz channels from 118,000 MHz to 136,975 MHz as defined in ICAO VHF Digital Link (VDL) Standards and Recommended Practices (SARPs) [i.4]. The present document considers the additional broadcast functionality required to support ADS-B, TIS-B, FIS-B, and GNS-B services. The present document may be used to produce tests for the assessment of the performance of the equipment. The performance of the equipment submitted for type testing should be representative of the performance of the corresponding production model. The present document has been written on the assumption that: • the type test measurements will be performed only once, in an accredited test laboratory and the measurements accepted by the various authorities in order to grant type approval; • if equipment available on the market is required to be checked it will be tested in accordance with the methods of measurement specified in the present document or a documented alternative approved by the certifying authority; • equipment comply with EN 301 489-22 [1], EN 301 842-1 [2] and EN 301 842-2 [3]. SIST EN 301 842-3 V1.3.1:2011
ETSI ETSI EN 301 842-3 V1.3.1 (2011-09) 7 1 Scope The present document applies to the following radio equipment types: • Very High Frequency (VHF) Digital Link (VDL) Mode 4 ground-based radio transmitters and receivers for air-ground communications operating in the VHF band, using Gaussian-filtered Frequency Shift Keying (GFSK) Modulation with 25 kHz channel spacing and capable of tuning to any of the 25 kHz channels from 118,000 MHz to 136,975 MHz as defined in ICAO VHF Digital Link (VDL) Standards and Recommended Practices (SARPs) [i.4]. The present document provides part 3 of the technical specifications. The present document is designed to ensure that equipment certified to it will be compatible with the relevant ICAO VHF Digital Link (VDL) Standards and Recommended Practices (SARPs) [i.4] and VDL Mode 4 Technical Manual (TM) [i.1]. Manufacturers should note that in future the tuning range for the ground transceivers may also cover any 25 kHz channel from 108,000 MHz to 117,975 MHz. The scope of the present document is limited to ground stations. The equivalent specification for airborne stations is EN 302 842 [6], [7], [8] and [9]. A description of the scope of the VDL Mode 4 system is provided in EN 301 842-2 [3], clause 1. EN 301 842-1 [2] deals with tests of the physical layer. EN 301 842-2 [3] deals with tests of the link layer sufficient to support broadcast functionality including requirements and tests sufficient to recognize and respond to transmissions associated with point-to-point communication. The present document provides technical specifications for a VDL Mode 4 ground-based transceiver supporting a full Automatic Dependent Surveillance-Broadcast (ADS-B) capability and, optionally, the additional functionality of either, or a combination of, the following services: • Traffic Information Service-Broadcast (TIS-B); • Flight Information Service-Broadcast (FIS-B); • GNSS Augmentation Service-Broadcast (GNS-B). The TIS-B, FIS-B or GNS-B functionality in the ground-based equipment is expected to be provided by a TIS-B, FIS B or GNS-B processor, which could be contained within the VDL Mode 4 transceiver, but could also be housed in a separate physical unit. Therefore to support TIS-B, FIS-B or GNS-B, the minimum functionality demanded of a basic VDL Mode 4 ground-based transceiver unit (i.e. one that does not have a TIS-B, FIS-B or GNS-B processor housed within it) is to receive, from the TIS-B, FIS-B or GNS-B processor, all messages to be transmitted, and to transmit them. In the case of FIS-B there is an additional requirement to receive report request messages (from other VDL4 stations) and to pass those messages to the FIS-B processor. It should be noted that the specifications for TIS-B, FIS-B and GNS-B in the present document represent a first step towards defining these applications, based on the work carried out as part of the NUP and MEDUP Programmes, and changes to the specifications for these services may therefore occur in the future. The present document is organized as follows: • clause 2 provides references to relevant documents; • clause 3 provides general definitions, abbreviations and symbols used; • clause 4 describes the VDL Mode 4 ground station functionality to support ADS-B, TIS-B, FIS-B and GNS B; • clause 5 provides performance specifications for the VDL Mode 4 ground station supporting ADS-B, TIS-B, FIS-B and GNS-B Services; • clause 6 provides general design requirements; • clause 7 provides protocol tests which emphasis the ADS-B, TIS-B, FIS-B and GNS-B functions of the system; SIST EN 301 842-3 V1.3.1:2011
ETSI ETSI EN 301 842-3 V1.3.1 (2011-09) 8 • annex A provides a detailed cross-reference to the relevant requirements contained in [i.1]; • annex B provides a Bibliography; • a document history. Note that the system can support a very wide range of functions. It is not practical to provide specific tests for all aspects of functionality. The approach used is to provide detailed tests for the core functionality to support ADS-B, FIS B, TIS-B and GNS-B focusing on the system requirements which, if wrongly implemented, could cause a deterioration in the service offered by other VDL Mode 4 stations.
Mandating and Recommendation Phrases a) "Shall":
the use of the word "Shall" indicates a mandated criterion; i.e. compliance with the particular procedure or specification is mandatory and no alternative may be applied. b) "Should":
the use of the word "Should" (and phrases such as "It is recommended that.", etc.) indicates that though the procedure or criterion is regarded as the preferred option, alternative procedures, specifications or criteria may be applied, provided that the manufacturer, installer or tester can provide information or data to adequately support and justify the alternative. 2 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. Referenced documents which are not found to be publicly available in the expected location might be found at http://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. 2.1 Normative references The following referenced documents are necessary for the application of the present document. [1] ETSI EN 301 489-22 (V1.3.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM); ElectroMagnetic Compatibility (EMC) standard for radio equipment and services; Part 22: Specific conditions for ground based VHF aeronautical mobile and fixed radio equipment". [2] ETSI EN 301 842-1 (V1.3.3): "VHF air-ground Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for ground-based equipment; Part 1: EN for ground equipment". [3] ETSI EN 301 842-2 (V1.6.1): "VHF air-ground Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for ground-based equipment; Part 2: General description and data link layer". [4] ETSI EN 301 842-4 (V1.2.2): "VHF air-ground Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for ground-based equipment; Part 4: Point-to-point functions". [5] EUROCAE ED-114 (September 2003): "MOPS for a GBAS ground facility to support CAT I approach and landing". SIST EN 301 842-3 V1.3.1:2011
ETSI ETSI EN 301 842-3 V1.3.1 (2011-09) 9 [6] ETSI EN 302 842-1 (V1.2.3): "VHF air-ground and air-air Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for aeronautical mobile (airborne) equipment; Part 1: Physical layer. [7] ETSI EN 302 842-2 (V1.3.1): "VHF air-ground and air-air Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for aeronautical mobile (airborne) equipment; Part 2: General description and data link layer". [8] ETSI EN 302 842-3 (V1.3.1): "VHF air-ground and air-air Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for aeronautical mobile (airborne) equipment; Part 3: Additional broadcast aspects". [9] ETSI EN 302 842-4 (V1.2.2): "VHF air-ground and air-air Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for aeronautical mobile (airborne) equipment; Part 4: Point-to-point functions". 2.2 Informative references 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] ICAO Doc 9816 AN/448 (First Edition 2004): "Manual on VHF Digital Link (VDL) Mode 4,
Part 2: Detailed Technical Specifications". [i.2] RTCA DO-242A: "Minimum Aviation System Performance Standards for Automatic Dependent Surveillance Broadcast (ADS-B)". [i.3] Amendments 76 and 77 to Volume I of Annex 10 to the Convention on International Civil Aviation, International Civil Aviation Organization: appendix B-B2, 3.6 Ground-Based Augmentation System (GBAS). [i.4] ICAO Annex 10 to the Convention on International Civil Aviation: "Aeronautical Telecommunications, Volume III: Communication Systems, Part I: Digital Data Communication Systems, chapter 6". [i.5] Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment and the mutual recognition of their conformity (R&TTE Directive). [i.6] Void. [i.7] ETSI EG 201 399: "Electromagnetic compatibility and Radio spectrum Matters (ERM); A guide to the production of Harmonized Standards for application under the R&TTE Directive". [i.8] WMO Publication No306: "Manual on Codes
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