EN 16803-1:2020

SLOVENSKI STANDARD
01-november-2020
Nadomešča:
SIST EN 16803-1:2016
Vesolje - Uporaba sistemov globalne satelitske navigacije (GNSS) za ugotavljanje
položaja pri inteligentnih transportnih sistemih (ITS) v cestnem prometu - 1. del:
Definicije in sistemsko-tehnični postopki za določanje in ocenjevanje zmogljivosti
Space - Use of GNSS-based positioning for road Intelligent Transport Systems (ITS) -
Part 1: Definitions and system engineering procedures for the establishment and
assessment of performances
Raumfahrt - Anwendung von GNSS-basierter Ortung für Intelligente Transportsysteme
im Straßenverkehr - Teil 1: Definitionen und Systemtechnikverfahren für die Festlegung
und Überprüfung von Leistungsdaten
Espace - Utilisation de la localisation basée sur les GNSS pour les systèmes de
transport routiers intelligents - Partie 1 : Définitions et procédure d’ingénierie système
pour l’établissement et la vérification des performances
Ta slovenski standard je istoveten z: EN 16803-1:2020
ICS:
03.220.20 Cestni transport Road transport
33.060.30 Radiorelejni in fiksni satelitski Radio relay and fixed satellite
komunikacijski sistemi communications systems
35.240.60 Uporabniške rešitve IT v IT applications in transport
prometu
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 16803-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2020
ICS 33.060.30; 35.240.60
Supersedes EN 16803-1:2016
English version
Space - Use of GNSS-based positioning for road Intelligent
Transport Systems (ITS) - Part 1: Definitions and system
engineering procedures for the establishment and
assessment of performances
Espace - Utilisation du positionnement GNSS pour les Raumfahrt - Anwendung von GNSS-basierter Ortung
systèmes de transport routier intelligents (ITS) - Partie für Intelligente Transportsysteme (ITS) im
1 : Définitions et procédures d'ingénierie système pour Straßenverkehr - Teil 1: Definitionen und
l'établissement et l'évaluation des performances Systemtechnikverfahren für die Festlegung und
Überprüfung von Leistungsdaten
This European Standard was approved by CEN on 12 July 2020.

CEN and CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for
giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical
references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to
any CEN and CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN and CENELEC member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN and CENELEC members are the national standards bodies and national electrotechnical committees of Austria, Belgium,
Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia,
Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

CEN-CENELEC Management Centre:
Rue de la Science 23, B-1040 Brussels
© 2020 CEN/CENELEC All rights of exploitation in any form and by any means Ref. No. EN 16803-1:2020 E
reserved worldwide for CEN national Members and for
CENELEC Members.
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 8
3.1 General terms . 8
3.2 Specific terms . 10
3.3 Abbreviations . 15
4 Description of the generic architecture of a Road ITS System based on GNSS . 16
4.1 Generic architecture . 16
4.2 Components . 16
5 Definition of performance metrics for positioning terminals . 18
5.1 General . 18
5.2 Outputs of the Positioning terminal . 18
5.3 Inputs to the performance characterization process . 20
5.4 Performance features . 20
5.5 Performance metrics . 21
5.6 Introduction to Performance Requirements . 34
6 Operational scenarios . 37
6.1 Definition . 37
6.2 GNSS environments classification and characterization . 39
7 Sensitivity Analysis. 42
7.1 General . 42
7.2 Presentation of the method . 42
8 PVT error models . 48
8.1 General . 48
8.2 Different types of error models . 49
8.3 Conformity assessment of the PVT error models . 49
Annex A (informative) Positioning performances metrics rationale. 51
A.1 General . 51
A.2 Performance metrics . 51
Bibliography . 57

European foreword
This document (EN 16803-1:2020) has been prepared by Technical Committee CEN-CENELEC/TC 5
“Space”, the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by March 2021, and conflicting national standards shall be
withdrawn at the latest by March 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 16803-1:2016.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
This revision of EN 16803-1 includes updates that are necessary to understand correctly the two next
EN – Part 2 and Part 3. Some concepts and metrics not identified at the very beginning of EN 16803-1
definitively required to be aligned with last works of CEN/TC 5/WG 1 standardization group. Global
architecture has not been modified, i.e. the table of content is unchanged. Among updates, the
Introduction describes the LBS and ITS market for which these EN series are targeted. The GNSS Based
Positioning Terminal (GBPT) is introduced later in the document, so that the “positioning system”
concept can be developed and be included in the new set of ITS applications such as autonomous driving.
The clause “Terms and Definitions” includes some new inputs now, like “Record&Replay”, or “Reference
Material”. About metrics, a new one has been introduced: the continuity metric that is slightly different
from the availability metric and could help to define how a service should be continuous. Definition of
Time To First First (TTFF) is also proposed in this revision. It should help to share a common vision of
what should be a hot/warn/cold start by using commonly accepted definitions. The concept of
performances classes has also been refined with the new subclause “Introduction to Performance
Requirements”. Finally, the sensitivity analysis concept has been enlarged or adapted to cover the
integrity assessment.
EN 16803, Space — Use of GNSS-based positioning for road Intelligent Transport Systems (ITS), consists of
the following parts:
— Part 1: Definitions and system engineering procedures for the establishment and assessment of
performances;
— Part 2: Assessment of basic performances of GNSS-based positioning terminals;
— Part 3: Assessment of security performances of GNSS-based positioning terminals.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.
Introduction
The civil applications of geopositioning are undergoing exponential development. The latest market
analysis for the GNSS systems shows two major fields of application that, all together, practically share
the whole of the market:
— intelligent Transport Systems (ITS), mainly in the Road ITS domain;
— location Based Services (LBS), accessible on smartphones and tablets.

Figure 1 — Cumulative Revenue 2015-2025 by segment (Source: GNSS Market Report, Issue 5,
copyright © European GNSS Agency, 2017)
When a Road ITS system needs GNSS positioning, which is the case for most of them, there is the question
of the choice of the type of terminal or of its minimum performances that are necessary to satisfy the
system's final requirements at user level. To meet these requirements, the system includes a processing
module called Road ITS application which uses the outputs (PVT = Position-Velocity-Time) of a
positioning system to provide the service with a given End-to-end performance. Consequently, this latter
depends on the quality of the positioning outputs, which are highly variable with respect to the
operational conditions of the system, but also on the performance of the Road ITS application itself.
Figure 2 represents the breakdown of a Road ITS system into its two main components.
Figure 2 — The two main components of a Road ITS system
The main Road ITS systems concerned by this issue are:
— autonomous driving;
— GNSS-based Road User Charging systems (road, parking zone, urban…);
— localized emergency calls (eCall);
— electronic tachograph;
— taximeter;
— regulated freight transport systems (hazardous substances, livestock, etc.);
— “Pay-as-you-drive” insurance;
— road management systems, traffic information systems;
— advanced Driver Assistance Systems (ADAS);
— etc.
Some Road ITS systems are considered as “safety critical”, because their failure may cause human death
or injury and others are “liability critical”, because they include financial or regulatory aspects. In some
cases, their development is subject to an official certification/homologation process.
Particularly for those systems, there exists a strong need to be able to prove they do meet their End-to-
end performance requirements related to positioning, but presently there is no standard that supports
such certification process.
The performance management approach proposed in this document is based on a classical system
engineering approach and is a support for engineers facing the problem of handling the performances of
a Positioning-based road ITS system all along the system development.
This overall performance management approach can be summarized as follow:
Figure 3 — Logic of
...