FprCEN/TR 18104

SLOVENSKI STANDARD
01-julij-2024
Aeronavtika - Delovanje sprejemnikov SBAS za pomorske aplikacije - poročilo o
preskusu MARESS
Space — SBAS receivers performances for maritime applications — MARESS Test
report
Raumfahrt - Leistung von SBAS-Empfängern für maritime Anwendungen - MARESS-
Testbericht
Espace Performances des récepteurs SBAS pour les applications maritimes Rapport
d'essais MARESS
Ta slovenski standard je istoveten z: FprCEN/TR 18104
ICS:
49.020 Letala in vesoljska vozila na Aircraft and space vehicles in
splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL REPORT FINAL DRAFT
RAPPORT TECHNIQUE
TECHNISCHER REPORT
May 2024
ICS
English version
Space - SBAS receivers performances for maritime
applications - MARESS Test report
Espace ¿ Performances des récepteurs SBAS pour les Raumfahrt - Leistung von SBAS-Empfängern für
applications maritimes ¿ Rapport d'essais MARESS maritime Anwendungen - MARESS-Testbericht

This draft Technical Report is submitted to CEN members for Vote. It has been drawn up by the Technical Committee
CEN/CLC/JTC 5.
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, Türkiye and United Kingdom.

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 supporting documentation.

Warning : This document is not a Technical Report. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a Technical Report.

CEN-CENELEC Management Centre:
Rue de la Science 23, B-1040 Brussels
© 2024 CEN/CENELEC All rights of exploitation in any form and by any means
Ref. No. FprCEN/TR 18104:2024 E
reserved worldwide for CEN national Members and for
CENELEC Members.
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Test scenarios . 5
4.1 General. 5
4.2 Test cases . 6
4.2.1 Test case #1: static accuracy and availability . 6
4.2.2 Test case #2: static accuracy with angular movement . 6
4.2.3 Test case #3: dynamic accuracy . 8
4.2.4 Test case #4: acquisition . 10
4.2.5 Test case #5: dynamic range . 11
4.2.6 Test case #6: position update . 12
4.2.7 Test case #7: SBAS processing . 14
4.2.8 Test case #8: SBAS satellite selection . 15
4.2.9 Test case #9: SBAS status indication . 17
4.2.10 Test case #10: integrity with RAIM . 19
4.3 Receivers under test . 21
5 Test results . 22
5.1 General. 22
5.2 Summary . 22
5.2.1 General. 22
5.2.2 Test results #1: static accuracy and availability . 22
5.2.3 Test results #2: static accuracy with angular movement . 26
5.2.4 Test results #3: dynamic accuracy . 28
5.2.5 Test results #4: acquisition . 32
5.2.6 Test results #5: dynamic range . 34
5.2.7 Test results #6: position update . 37
5.2.8 Test results #7: SBAS processing . 40
5.2.9 Test results #8: SBAS satellite selection . 50
5.2.10 Test results #9: SBAS status indication . 58
5.2.11 Test results #10: integrity with RAIM . 62
5.3 Recommendations to IEC 61108-7 draft . 65
Annex A (informative) Additional test information . 67
Bibliography . 75
European foreword
This document (FprCEN/TR 18104:2024) has been prepared by Technical Committee CEN/JTC 5
“Space”, the secretariat of which is held by BNAE.
This document is currently submitted to the Vote on TR.
Introduction
This technical document MARESS D2.2 has been prepared by European Satellite Services Provider
(ESSP) in the scope of MARitime Receiver SBAS Standardization (MARESS) project to support
International Standard IEC 61108-7 for SBAS receiver equipment. The purpose of this document is to
present it in CEN/CENELEC JTC5/WG8 working group to support standardization process within
IEC technical committee 80: Maritime navigation and radiocommunication equipment and systems.
Note at the time of the Publication: The outcome of this report has been already considered in the
development of the IEC 61108-7 standard. This implies that these results are obsolete since in the
current version of the IEC 61108-7 some requirements and tests have been updated.
1 Scope
The objective of this document is to present the results of the tests defined in the IEC 61108-7 draft [1]
performed with a maritime receiver updated based on the SBAS maritime guidelines [2] and other GNSS
SBAS receivers.
The list of test scenarios prepared, the receiver analysed, the configuration used and procedures are
included in Clause 4. In Clause 5, graphical and numerical results for each of the test performed are
presented, including if the tests are passed or failed. Annex A provides additional information on the
test case setup.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
No terms and definitions are listed in this document.
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 https://www.electropedia.org/
4 Test scenarios
4.1 General
The test scenarios implemented in MARESS project have been based on the MARESS deliverable D2.1
Methods of testing and required results [1].
In this Clause, all the tests performed are listed including the respective configuration used. All the tests
have been prepared to process GPS L1 and SBAS L1.
The following information can be found for each of the tests executed:
• start date: indicate the start date of the scenario under test;
• duration: indicate the duration of the test;
• signal source: specify if the receiver was connected to real signals with a GNSS antenna in ESSP roof
(Madrid) or if the GNSS simulator has been used to generate the GNSS and SBAS signals;
• data source: indicate if real data has been used as input (GPS RINEX and EGNOS EMS files); or the
data has been automatically generated by the GNSS simulator (synthetic data);
• receiver position: provides the position of the receiver (real or simulated);
• specific configuration related with the objective of the test;
• outputs to be analysed: list of parameters to be retrieved from the receiver under test to check if the
test is passed/failed.
4.2 Test cases
4.2.1 Test case #1: static accuracy and availability
The objective of this test is to check the static accuracy and availability of the receiver when providing
SBAS PVT solution.
Table 1 provides specific information on the test characteristics and configuration:
Table 1 — Test case #1 — Scenario configuration
Start date N/A (variable)
Duration > 86 400 epochs
Signal source Real RF L1 Signal
Data source Real Data
Receiver position Lat = 40.472°
Lon = −3.452°
Height = 661,1 m
Specific configuration NMEA output rate: 1 Hz
Static receiver
Outputs Epoch
PVT solution mode
Position
All the outputs from the receivers are obtained through NMEA messages.
The start date is variable since it depends on when the receiver was connected to the antenna located in
the roof of ESSP premises in Madrid.
The results of this test are included in subclause 5.2.1.
4.2.2 Test case #2: static accuracy with angular movement
The objective of this test is to check the static accuracy and availability of the receiver providing SBAS
PVT solution when the antenna is performing an angular displacement of 22.5°, simulating roll, in a
period of 8 s during the duration of the test.
Table 2 provides specific information on the test characteristics and configuration.
Table 2 — Test case #2 — Scenario configuration
Start date 02-Apr-2021 23:50:00
Duration 87 000 epochs
Signal source GNSS simulator
Data source Synthetic data
Receiver position Lat = 40.467°
Lon = −3.45°
Height = 661,28 m
Specific configuration NMEA output rate: 1 Hz
Static receiver
Antenna with angular
movement (±22.5° during
8 seconds).
Outputs Epoch
PVT solution mode
Position
Figure 1 shows a snapshot of the antenna movement configured in the GNSS simulator.

Figure 1 — Snapshot of GNSS simulator for antenna movement
Errors have not been introduced in the GPS signals and so, the position error is expected to be more
accurate compared to a real scenario. However, the objective of the test is to check that the error is not
increased when the antenna performs the angular movements in comparison with a nominal static
scenario.
All the outputs from the receivers are obtained through NMEA messages.
The results of this test are included in subclause 5.2.2.
4.2.3 Test case #3: dynamic accuracy
4.2.3.1 General
The objective of this test is to check the dynamic accuracy of the receiver providing SBAS PVT solution.
Table 3 provides specific information on the test characteristics and configuration.
Table 3 — Test case #3 — Scenario configuration
Start date 03-Apr-2021 00:00:00
Duration 86 400 epochs
Signal source GNSS simulator
Data source Synthetic data
Receiver position Dynamic position (refer to
Table 4)
Specific configuration NMEA output rate: 1 Hz
Receiver in movement (re
...