ISO/FDIS 23629-7

UAS traffic management (UTM)

Gestion du trafic des aéronefs sans pilote (UTM)

General Information

• Status: Published
• ICS: 49.020 - Aircraft and space vehicles in general
• Technical Committee: ISO/TC 20/SC 16 - Unmanned aircraft systems
• Drafting Committee: ISO/TC 20/SC 16/WG 4 - UAS Traffic Management
• Current Stage: 5020 - FDIS ballot initiated: 2 months. Proof sent to secretariat
• Start Date: 16-Jun-2021
• Completion Date: 16-Jun-2021

Standards Content (sample)

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 23629-7
ISO/TC 20/SC 16
UAS traffic management (UTM) —
Secretariat: ANSI
Voting begins on:
Part 7:
2021-06-16
Data model for spatial data
Voting terminates on:
2021-08-11
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 23629-7:2021(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. ISO 2021
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ISO/FDIS 23629-7:2021(E)
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© ISO 2021

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ii © ISO 2021 – All rights reserved
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ISO/FDIS 23629-7:2021(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Data model .................................................................................................................................................................................................................. 2

4.1 Overall data model ............................................................................................................................................................................... 2

4.2 Ground map package ......................................................................................................................................................................... 3

4.2.1 Overview ................................................................................................................................................................................. 3

4.2.2 Attributes of takeoff and landing area........................................................................................................... 3

4.2.3 Attributes of land ............................................................................................................................................................. 4

4.3 Obstacle data package ...................................................................................................................................................................... 5

4.3.1 Overview ................................................................................................................................................................................. 5

4.3.2 Attributes of static obstacle .................................................................................................................................... 5

4.3.3 Attributes of temporal obstacle .......................................................................................................................... 5

4.4 Virtual data package ........................................................................................................................................................................... 6

4.4.1 Overview ................................................................................................................................................................................. 6

4.4.2 Attributes of airspace .................................................................................................................................................. 6

4.4.3 Attributes of flight route............................................................................................................................................ 6

4.4.4 Attributes of CNS coverage...................................................................................................................................... 7

4.5 Dynamic data package ...................................................................................................................................................................... 7

4.5.1 Overview ................................................................................................................................................................................. 7

4.5.2 Object sub-package ........................................................................................................................................................ 8

4.5.3 Phenomena sub-package .......................................................................................................................................... 9

Annex A (informative) Examples of information ..................................................................................................................................11

Annex B (informative) Use cases............................................................................................................................................................................12

Bibliography .............................................................................................................................................................................................................................26

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ISO/FDIS 23629-7:2021(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/

iso/ foreword .html.

This document was prepared by Technical Committee, ISO/TC20, Aircraft and space vehicles,

Subcommittee SC 16, Unmanned aircraft systems.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
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ISO/FDIS 23629-7:2021(E)
Introduction

In order to enable UAS (unmanned aircraft systems) to operate safely, there is a need to define the data

model that is related to various spatial information for common use between the UAS operators and the

UAS traffic management (UTM) system. Existing standards regarding spatial data for safely operating

UAS including static data and dynamic data do not exist, whereas efforts are underway to establish

related standards on the part of ASTM and EUROCAE.

This document can be used as a reference model. Implementations of this document can lead to cost

reductions in maintenance/expansion for application developers as well as compilation/maintenance

of map data for map providers.
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FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 23629-7:2021(E)
UAS traffic management (UTM) —
Part 7:
Data model for spatial data
1 Scope

This document specifies the data model that is related to various spatial information for common

use between the UAS service provider and the system for operation control, e.g. UTM. This document

specifies the names of the items for the data model, while the communication architecture and

responsibilities of actors to define the items are not included.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 21384-4, Unmanned aircraft systems — Part 4: Vocabulary
ISO 19157, Geographic information — Data quality
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 21384-4 and the following

apply.

ISO and IEC maintain terminology databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
aerodrome

defined area on land or water (including any buildings, installations and equipment) intended to be

used either wholly or in part for the arrival, departure and surface movement of aircraft

[SOURCE: ICAO/Annex 2]
3.2
CNS

communications, navigation, and surveillance systems, employing digital technologies, including

satellite systems together with various levels of automation
[SOURCE: ICAO Doc. 9750]
3.3
time
mark attributed to an instant or a time interval on a specified time scale
Note 1 to entry: The representation rules are defined in the ISO 8601 series.
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ISO/FDIS 23629-7:2021(E)

[SOURCE: ISO 8601-1:2019, 3.1.1.2, modified — The original notes to entry have been removed; a new

note 1 to entry has been added.]
3.4
elevation

vertical distance of a point or a level, on or affixed to the surface of the earth, measured from mean sea

level
[SOURCE: ICAO/Annex 4]
3.5
flight route

specified route designed for channelling the flow of traffic as necessary for the provision of UTM (3.11)

3.6
geo-limitation

entity that represents area surrounded by virtual boundary lines in the real world

3.7
geoid undulation
height of the geoid relative to a given ellipsoid of reference
3.8
height above ellipsoid

vertical distance of a point or a level, on or affixed to the surface of the earth, measured from World

Geodetic System 1984 (WGS 84) ellipsoid
3.9
shape
horizontal projection on earth of a given object
3.10
magnetic declination
angle on the horizontal plane between magnetic north and true north
3.11
UAS traffic management
UTM

set of traffic management and air navigation services aiming at safe, secure and efficient integration of

multiple manned and unmanned aircraft flying inside the respective designated operational coverage

of each service
4 Data model
4.1 Overall data model

Overall data model shall consist of four packages: ground map package, obstacle data package,

virtual data package, dynamic data package. Figure 1 shows the overall data model. For examples of

information, see Annex A. For use cases, see Annex B.

An overall, data quality management system shall prove the data quality in accordance with ISO 19157.

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ISO/FDIS 23629-7:2021(E)
Figure 1 — Overall data model
4.2 Ground map package
4.2.1 Overview

Ground map package contains data that are defined as “geographical surface areas designed for specific

activities”. Ground map package shall as a minimum contain two entities: takeoff and landing areas and

land.
4.2.2 Attributes of takeoff and landing area

Takeoff and landing area is an entity that represents the area designated for either takeoff or landing

of a UA (unmanned aircraft) in the real world. Table 1 summarizes minimum attributes of takeoff and

landing area. Magnetic declination changes over time, and it may be updated as needed. Takeoff and

landing area may include vertiports using the elements of conditions for operation and resources.

Table 1 — Attributes of takeoff and landing area
Attribute Description
Identifier Information for identifying the entity
Generate time Information indicating the time the entity was generated
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ISO/FDIS 23629-7:2021(E)
Table 1 (continued)
Attribute Description

Disappearance time Information indicating the time the entity will be disappeared, if projected

Available time interval Information indicating the time interval the area is available

Elevation Information indicating the elevation

Geoid undulation at elevation Information indicating the geoid undulation at elevation

Time zone Information indicating the time zone
Magnetic declination Information indicating the magnetic declination
Shape Information indicating the shape type and boundaries data (e.g. a group of
coordinates of control points for polygon or center point with radius) of the
entity

Location Information indicating the centroid of the entity in terms of latitudes and

longitudes

Administration contact details Information indicating the entity’s administration contact details (e.g. ad-

ministration’s name, address, telephone)

Conditions for operation Information indicating the conditions for operation (e.g. weather conditions,

aircraft performance, operation procedures), either generally applicable to
all operations, or limited to specific operations

Resources Information indicating the equipment of the entity (e.g. energy supply, re-

pairment, on-site staff)

Availability of emergency landing Information indicating availability of emergency landing areas including

areas dimensions and operating conditions, if any
4.2.3 Attributes of land

Land is an entity that represents artificially divided areas for specific activities in the real world. Table 2

lists minimum attributes of land. Magnetic declination changes over time, and it may be updated as

needed.
Table 2 — Attributes of land
Attribute Description
Identifier Information for identifying the entity
Generate time Information indicating the time the entity was generated

Disappearance time Information indicating the time the entity will be disappeared, if projected

Elevation Information indicating the elevation

Geoid undulation at elevation Information indicating the geoid undulation at elevation

Time zone Information indicating the time zone
Magnetic declination Information indicating the magnetic declination
Shape Information indicating the shape type and boundaries data (e.g. a group of
coordinates of control points for polygon or center point with radius) of the
entity

Location Information indicating the centroid of the entity in terms of latitudes and

longitudes

Availability of emergency landing Information indicating availability of emergency landing areas including

areas dimensions and operating conditions, if any
Type of land Information indicating the type of land (e.g. farmland, road)
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ISO/FDIS 23629-7:2021(E)
4.3 Obstacle data package
4.3.1 Overview

Obstacle data package shall contain data that are defined as “tangible objects having a temporarily or

permanently fixed location in the real world and pose a potential hazard to surface or air traffic of

aircraft”. Obstacle data package shall as a minimum contain two entities: static and temporal obstacle.

4.3.2 Attributes of static obstacle

Static obstacle can be used for buildings, pylons, trees, etc. Table 3 summarizes minimum attributes of

static obstacle.
Table 3 — Attributes of static obstacle
Attribute Description
Identifier Information for identifying the entity
Generate time Information indicating the time the entity was generated

Disappearance time Information indicating the time the entity will be disappeared, if projected

Height Information indicating the height of the entity’s maximum vertical extent
measured from a specified datum (specified in type of height)
Type of height e.g. height above ellipsoid, height above mean sea level
Shape Information indicating the shape type and boundaries data (e.g. a group of
coordinates of control points for polygon or center point with radius) of the
entity

Location Information indicating the centroid of the entity in terms of latitudes and

longitudes

Type of obstacle Information indicating the type of obstacle (e.g. building, tower, pole, antenna)

4.3.3 Attributes of temporal obstacle

Temporal obstacle can be used for short-term erections or for modifications to a static obstacle such as

scaffolding. Table 4 summarizes minimum attributes of temporal obstacle.
Table 4 — Attributes of temporal obstacle
Attribute Description
Identifier Information for identifying the entity
Generate time Information indicating the time the entity was generated

Disappearance time Information indicating the time the entity will be disappeared, if projected

Height Information indicating the height of the entity’s maximum vertical extent
measured from a specified datum (specified in type of height)
Type of height e.g. height above ellipsoid, height above mean sea level
Shape Information indicating the shape type and boundaries data (e.g. a group of
coordinates of control points for polygon or center point with radius) of the
entity

Location Information indicating the centroid of the entity in terms of latitudes and

longitudes

Type of obstacle Information indicating the type of obstacle (e.g. scaffolding, construction

equipment)
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ISO/FDIS 23629-7:2021(E)
4.4 Virtual data package
4.4.1 Overview

Virtual data package shall contain data that are defined as “virtual objects that are intangible

representations (including computer simulated representations) of attributes of particular real-world

areas or objects”. Virtual data package shall as a minimum contain three entities: airspace, flight routes,

and CNS coverage.
4.4.2 Attributes of airspace

Table 5 summarizes attributes of airspace. Airspace may include geo-limitations using the elements of

conditions for operation and type of airspace.
Table 5 — Attributes of airspace
Attribute Description
Identifier Information for identifying the entity
Generate time Information indicating the time the entity was generated

Disappearance time Information indicating the time the entity will be disappeared, if projected

Maximum height Information indicating the altitude of the entity's maximum vertical extent

measured from a specified datum (specified in type of height)

Minimum height Information indicating the altitude of the entity's minimum vertical extent

measured from a specified datum (specified in type of height)
Type of height e.g. height above ellipsoid, height above mean sea level
Shape Information indicating the shape type and boundaries data (e.g. a group of
coordinates of control points for polygon or center point with radius) of the
entity

Location Information indicating the centroid of the entity in terms of latitudes and

longitudes

Administration contact details Information indicating the entity’s administration contact details (e.g. ad-

ministration’s name, address, telephone)

Conditions for operation Information indicating the conditions for operation (e.g. weather conditions,

aircraft performance, operation procedures), either generally applicable to
all operations, or limited to specific operations

Availability of UTM services Information indicating availability of UTM services (e.g. sharing of traffic

information between manned and unmanned aircraft), if any

Type of airspace Controlled airspace, uncontrolled airspace, authorized airspace, unauthorized

airspace, etc.
4.4.3 Attributes of flight route

Table 6 summarizes attributes of flight route. A flight route is an entity that consists of a sequence of

waypoints and tolerance from each waypoint, representing a group of coordinates in terms of latitudes,

longitudes and height for a flight of a UA, which may have a temporal element if necessary.

Table 6 — Attributes of flight route
Attribute Description
Identifier Information for identifying the entity
Generate time Information indicating the time the entity was generated

Disappearance time Information indicating the time the entity will be disappeared, if projected

Sequence of waypoints Information indicating the sequence of elements the flight route entity entails,

along with a time element if necessary
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ISO/FDIS 23629-7:2021(E)
Table 6 (continued)
Attribute Description

Tolerance of waypoints Information indicating the tolerated deviation from the entity in terms of

distance from a given waypoint, based on the same ICAO principles that are
used in required navigation performance (RNP) as necessary.

Administration contact details Information indicating the entity’s administration contact details (e.g. ad-

ministration’s name, address, telephone)

Conditions for operation Information indicating the conditions for operation (e.g. weather conditions,

aircraft performance, operation procedures), either generally applicable to
all operations, or limited to specific operations

Availability of UTM services Information indicating availability of UTM services (e.g. sharing of traffic

information between manned and unmanned aircraft), if any
Type of flight route Controlled flight route, uncontrolled flight route, etc.
4.4.4 Attributes of CNS coverage

CNS coverage is an entity that represents the coverage of individual units composing the CNS

infrastructure in the real world. Table 7 summarizes minimum attributes of CNS coverage.

Table 7 — Attributes of CNS coverage
Attribute Description
Identifier Information for identifying the entity
Generate time Information indicating the time the entity was generated

Disappearance time Information indicating the time the entity will be disappeared, if projected

Maximum height Information indicating the altitude of the entity's maximum vertical extent

measured from a specified datum (specified in type of height)

Minimum height Information indicating the altitude of the entity's minimum vertical extent

measured from a specified datum (specified in type of height)
Type of height e.g. height above ellipsoid, height above mean sea level
Shape Information indicating the shape type and boundaries data (e.g. a group of
coordinates of control points for polygon or center point with radius) of the
entity

Location Information indicating the vertices or the centroid of the entity in terms of

latitudes and longitudes, where vertices are indicated for polylines, polygons,
and polynomial curves, and the centroid in case of circles

Type of CNS Information indicating the type of communication (e.g. cellular network,

radio), navigation (e.g. satellite navigation, radio navigation), surveillance
(ADS-B, transponder) and coverage data of the entity

Administration contact details Information indicating the entity’s administration contact details (e.g. ad-

ministration’s name, address, telephone)
4.5 Dynamic data package
4.5.1 Overview

Dynamic data package shall as a minimum contain two sub-packages: object sub-package and

phenomena sub-package.
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ISO/FDIS 23629-7:2021(E)
4.5.2 Object sub-package
4.5.2.1 Overview

Object sub-package shall contain data that are defined as “objects with time-varying positions”. Object

sub-package contains two entities: manned aircraft and unmanned aircraft.
4.5.2.2 Attributes of manned aircraft

Manned aircraft is an entity that represents manned aircraft in the real world. Table 8 summarizes

minimum attributes of manned aircraft. Trajectory is split in to two descriptions: planned and updated.

Planned trajectory include the flight planned route and airspace (e.g. a group of coordinates of control

points for polygon or center point with radius) of the entity as specified in the flight plan submitted for

the entity, whereas updated trajectory include the entity’s updated and recorded route, airspace (e.g. a

group of coordinates of control points for polygon or center point with radius), and positions that consist

of the updated and recorded altitudes, speeds and coordinates in terms of latitudes and longitudes

of the entity, and the timestamp of the latest update. Planned trajectory and updated trajectory are

linked with individual manned aircraft, as opposed to flight route defined in 4.4.3, which can be fixed

independently of any specific manned aircraft. Considering that manned aircraft may not necessarily

fly along a fixed flight route, planned trajectory and updated trajectory do not need to correspond to

any flight route. The frequency of the update is outside the scope of this document.

Table 8 — Attributes of manned aircraft
Attribute Description
Identifier Information for identifying the entity
Generate time Information indicating the time the entity was generated

Disappearance time Information indicating the time the entity will be disappeared, if projected

Planned trajectory Information indicating the flight planned route and airspace (e.g. polygon,

polyline, or circle) of the entity as specified in the flight plan submitted for
the entity

Updated trajectory Information indicating the entity’s updated and recorded route, airspace

(e.g. a group of coordinates of control points for polygon or center point
with radius), and positions that consist of the updated and recorded speeds,
headings, and coordinates in terms of latitudes, longitudes and height of the
entity, and the time of the latest update

Administration contact details Information indicating the entity’s administration contact details (e.g. ad-

ministration’s name, address, telephone)

Model Information indicating the entity’s model (e.g. manufacturer’s name, product

name, version number)
4.5.2.3 Attributes of unmanned aircraft

Unmanned aircraft is an entity that represents unmanned aircraft in the real world. Table 9 summarizes

attribute of unmanned aircraft. Planned trajectory and updated trajectory are linked with individual

unmanned aircraft, as opposed to flight route defined in 4.4.3, which can be fixed independently of any

specific unmanned aircraft. Considering that unmanned aircraft may not necessarily fly along a fixed

flight route, planned trajectory and updated trajectory do not need to correspond to any flight route.

Table 9 — Attributes of unmanned aircraft
Attribute Description
Identifier Information for identifying the entity
Generate time Information indicating the time the entity was generated

Disappearance time Information indicating the time the entity will be disappeared, if projected

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Table 9 (continued)
Attribute Description

Planned trajectory Information indicating the flight planned route and airspace (e.g. a group of

coordinates of control points for polygon or center point with radius) of the
entity as specified in the flight plan submitted for the entity

Updated trajectory Information indicating the entity’s updated and recorded route, airspace

(e.g. a group of coordinates of control po
...