EN 61108-3:2010

SLOVENSKI STANDARD
01-september-2010
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Maritime navigation and radiocommunication equipment and systems - Global navigation
satellite systems (GNSS) - Part 3: Galileo - Receiver equipment - Performance
requirements, methods of testing and required test results (IEC 61108-3:2010)
Navigations- und Funkkommunikationsgeräte und -systeme für die Seeschifffahrt -
Weltweite Navigations-Satellitensysteme (GNSS) - Teil 3: Galileo - Empfangsanlagen -
Leistungsanforderungen, Prüfverfahren und geforderte Prüfergebnisse (IEC 61108-
3:2010)
Matériels et systèmes de navigation et de radiocommunication maritimes - Système
mondial de navigation par satellite (GNSS) - Partie 3 : Equipement pour récepteur
Galileo - Exigences d'exploitation et de fonctionnement, méthodes d'essai et résultats
d'essai exigés (CEI 61108-3:2010)
Ta slovenski standard je istoveten z: EN 61108-3:2010
ICS:
47.020.70 Navigacijska in krmilna Navigation and control
oprema equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 61108-3
NORME EUROPÉENNE
June 2010
EUROPÄISCHE NORM
ICS 47.020.70
English version
Maritime navigation and radiocommunication equipment and systems -
Global navigation satellite systems (GNSS) -
Part 3: Galileo receiver equipment -
Performance requirements, methods of testing and required test results
(IEC 61108-3:2010)
Matériels et systèmes de navigation  Navigations-
et de radiocommunication maritimes - und Funkkommunikationsgeräte
Système mondial de navigation und -systeme für die Seeschifffahrt –
par satellite (GNSS) - Weltweite Navigations-Satellitensysteme
Partie 3 : Equipement pour récepteur (GNSS) -
Galileo - Teil 3: Galileo – Empfangsanlagen –
Exigences d'exploitation Leistungsanforderungen, Prüfverfahren
et de fonctionnement, méthodes d'essai und geforderte Prüfergebnisse
et résultats d'essai exigés (IEC 61108-3:2010)
(CEI 61108-3:2010)
This European Standard was approved by CENELEC on 2010-06-01. 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 Central Secretariat or to any 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 CENELEC member into its own language and notified
to the Central Secretariat has the same status as the official versions.

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

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61108-3:2010 E
Foreword
The text of document 80/590/FDIS, future edition 1 of IEC 61108-3, prepared by IEC TC 80, Maritime
navigation and radiocommunication equipment and systems, was submitted to the IEC-CENELEC
parallel vote and was approved by CENELEC as EN 61108-3 on 2010-06-01.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
rights.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
(dop) 2011-03-01
national standard or by endorsement
– latest date by which the national standards conflicting
(dow) 2013-06-01
with the EN have to be withdrawn
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61108-3:2010 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 61108 series NOTE  Harmonized in EN 61108 series (not modified).
IEC 61162-2 NOTE  Harmonized as EN 61162-2.
__________
- 3 - EN 61108-3:2010
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application 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.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

1)
IEC 60721-3-6 1987 Classification of environmental conditions - EN 60721-3-6 1993
Part 3: Classification of groups of
environmental parameters and their severities
- Ship environment
IEC 60945 - Maritime navigation and radiocommunication EN 60945 -
equipment and systems - General
requirements - Methods of testing and
required test results
IEC 61108-1 2003 Maritime navigation and radiocommunication EN 61108-1 2003
equipment and systems - Global navigation
satellite systems (GNSS) -
Part 1: Global positioning system (GPS) -
Receiver equipment - Performance standards,
methods of testing and required test results

IEC 61108-4 - Maritime navigation and radiocommunication EN 61108-4 -
equipment and systems - Global navigation
satellite systems (GNSS) -
Part 4: Shipborne DGPS and DGLONASS
maritime radio beacon receiver equipment -
Performance requirements, methods of testing
and required test results
IEC 61162 Series Maritime navigation and radiocommunication EN 61162 Series
equipment and systems - Digital interfaces

IEC 61162-1 - Maritime navigation and radiocommunication EN 61162-1 -
equipment and systems - Digital interfaces -
Part 1: Single talker and multiple listeners

IEC 62288 - Maritime navigation and radiocommunication EN 62288 -
equipment and systems - Presentation of
navigation-related information on shipborne
navigational displays - General requirements,
methods of testing and required test results

IMO Resolution - General requirements for shipborne radio - -
A.694(17) equipment forming part of the global maritime
distress and safety system (GMDSS) and for
electronic navigational aids
1)
EN 60721-3-6 includes A1 to IEC 60721-3-6.

Publication Year Title EN/HD Year

IMO Resolution - Revised maritime policy and requirements - -
A.915(22) for a future Global Navigation Satellite
System (GNSS)
IMO Resolution - World-wide radionavigation system - -
A.953(23)
IMO Resolution - Adoption of the Performance Standards for - -
MSC.233(82) Shipborne GALILEO Receiver Equipment

ITU-R - Technical characteristics of differential - -
Recommendation transmissions for global navigation satellite
M.823-3 systems from maritime radio beacons in the
frequency band 283.5-315 kHz in Region 1
and 285-325 kHz in Regions 2 and 3

RTCM 10402 - RTCM Recommended Standards for - -
version 2.4 Differential GNSS (Global Navigation Satellite
Systems) Service
IEC 61108-3 ®
Edition 1.0 2010-05
INTERNATIONAL
STANDARD
colour
inside
Maritime navigation and radiocommunication equipment and systems – Global
navigation satellite systems (GNSS) –
Part 3: Galileo receiver equipment – Performance requirements, methods of
testing and required test results

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XA
ICS 47.020.70 ISBN 978-2-88910-945-6
– 2 – 61108-3 © IEC:2010(E)
CONTENTS
FOREWORD.5
1 Scope.7
2 Normative references .7
3 Terms, definitions and abbreviations .8
3.1 Terms and definitions .8
3.2 Abbreviations .8
4 Minimum performances standards .9
4.1 Object .9
4.2 Galileo receiver equipment .10
4.2.1 Minimum facilities .10
4.2.2 Configuration.10
4.2.3 Quality assurance.10
4.3 Performance standards for Galileo receiver equipment.10
4.3.1 General .10
4.3.2 Equipment output .11
4.3.3 Accuracy .12
4.3.4 Acquisition.12
4.3.5 Antenna and input/output connections .13
4.3.6 Antenna design .13
4.3.7 Dynamic range .13
4.3.8 Protection from specific interfering signals.13
4.3.9 Position update .14
4.3.10 Differential Galileo input .14
4.3.11 Navigational warnings and status indications.14
4.3.12 Output of COG, SOG and UTC .18
4.3.13 Typical interference conditions .19
5 Methods of testing and required test results .19
5.1 Test sites .19
5.2 Test sequence.20
5.3 Test signals.20
5.4 Determination of accuracy .21
5.5 General requirements and presentation requirements.21
5.5.1 Normal conditions.21
5.5.2 General requirements .21
5.5.3 Presentation requirements.21
5.6 Receiver tests .21
5.6.1 Galileo receiver equipment .21
5.6.2 Position output .22
5.6.3 Equipment output .22
5.6.4 Accuracy .22
5.6.5 Acquisition.23
5.6.6 Antenna and input/output connections .24
5.6.7 Antenna design .24
5.6.8 Sensitivity and dynamic range .24
5.6.9 Protection from other shipborne transmitters .25
5.6.10 Position update .25

61108-3 © IEC:2010(E) – 3 –
5.6.11 Differential Galileo input .26
5.6.12 Navigational warnings and status indications.26
5.6.13 Accuracy of COG and SOG .29
5.6.14 Validity of COG and SOG information .29
5.6.15 Output of UTC .30
5.7 Tests for typical RF interference conditions .30
5.7.1 Simulator conditions .30
5.7.2 Navigation solution accuracy test .30
5.7.3 Re-acquisition test.31
Annex A (informative) Galileo navigation signals characteristics .33
Annex B (informative) The Galileo integrity concept .35
Annex C (informative) Receiver autonomous integrity monitoring (RAIM).41
Annex D (normative) Galileo standard received signals and interference environment .51
Annex E (informative) Galileo RAIM testing .56
Bibliography.58

Figure B.1 – Graphical illustration of SISA and SISMA [GIC05].37
Figure C.1 – Navigation alerts and FDE events.42
Figure C.2 – RNP parameters .43
Figure C.3 – Receiver autonomous integrity monitoring (RAIM) .44
Figure C.4 – Position errors .45
Figure C.5 – Decision threshold and minimum detectable bias for the (W)SSE statistic.46
Figure C.6 – Maximum residual test statistic .47
Figure C.7 – Geometry screening .48
Figure D.1 – E5 in-band and near-band maximum CW RFI levels .52
Figure D.2 – E1 in-band and near-band maximum CW RFI levels .53
Figure D.3 – E5 Maximum in-band CW/NBI RFI levels .54
Figure D.4 – E1 Maximum in-band CW/NBI RFI levels .54

Table 1 – Acquisition time limits.13
Table 2 – RAIM integrity states .17
Table 3 – Integrity states corresponding to the Galileo integrity message .18
Table 4 – Accuracy of COG .19
Table 5 – RF interference values .31
Table A.1 – General characteristics of the Galileo navigation signals.33
Table A.2 – General characteristics of Galileo observables.34
Table B.1 – Integrity flag values.38
Table C.1 – Galileo satellite failure [GIC05] .49
Table C.2 – RAIM-FDE parameters.50
Table D.1 – Minimum and maximum receiver power levels on ground .51
Table D.2 – Minimum and maximum levels at antenna port and receiver input .51
Table D.3 – Table of main characteristics of Figure D.1 above.52
Table D.4 – Table of main characteristics of Figure D.2 .53
Table D.5 – E5 maximum in-band RFI levels versus bandwidth.54

– 4 – 61108-3 © IEC:2010(E)
Table D.6 – E5 maximum in-band RFI levels versus bandwidth.55
Table E.1 – Scenario overview.57

61108-3 © IEC:2010(E) – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MARITIME NAVIGATION AND
RADIOCOMMUNICATION EQUIPMENT AND SYSTEMS –
GLOBAL NAVIGATION SATELLITE SYSTEMS (GNSS) –

Part 3: Galileo receiver equipment –
Performance requirements, methods
of testing and required test results

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61108-3 has been prepared by IEC technical committee 80:
Maritime navigation and radiocommunication equipment and systems.
The text of this standard is based on the following documents:
FDIS Report on voting
80/590/FDIS 80/595/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 6 – 61108-3 © IEC:2010(E)
A list of all the parts in the IEC 61108 series, under the general title: Maritime navigation and
radiocommunication equipment and systems – Global navigation satellite systems (GNSS),
can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
61108-3 © IEC:2010(E) – 7 –
MARITIME NAVIGATION AND
RADIOCOMMUNICATION EQUIPMENT AND SYSTEMS –
GLOBAL NAVIGATION SATELLITE SYSTEMS (GNSS) –

Part 3: Galileo receiver equipment –
Performance requirements, methods
of testing and required test results

1 Scope
This part of IEC 61108 specifies the minimum performance standards, methods of testing and
required test results for Galileo shipborne receiver equipment, based on IMO resolution
MSC.233(82), which uses the signals from the Galileo Global Navigation Satellite System in
order to determine position. It takes account of the general requirements given in IMO
resolution A.694(17) and is associated with IEC 60945. When a requirement in this standard
is different from IEC 60945, the requirement in this standard takes precedence. It also takes
account, as appropriate, of requirements for the presentation of navigation-related information
on shipborne navigational displays given in IMO resolution MSC.191(79) and is associated
with IEC 62288.
A description of the Galileo Open Service and Safety of Life Service is given in the Galileo
interface control documents (see Bibliography). This receiver standard applies to navigation in
ocean waters for the open service and harbour entrances, harbour approaches and coastal
waters for the Safety of Life service, as defined in IMO resolution A.953(23).
All text of this standard, whose meaning is identical to that in IMO resolution MSC.233(82), is
printed in italics and the resolution and paragraph numbers are indicated in brackets i.e.
(M.233/A1.2).
The requirements in Clause 4 are cross-referenced to the tests in Clause 5 and vice versa.
2 Normative references
The following referenced documents are indispensable for the application 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.
IEC 60721-3-6:1987, Classification of environmental conditions – Part 3-6: Classification of
groups of environmental parameters and their severities – Ship environment
IEC 60945, Maritime navigation and radiocommunication equipment and systems – General
requirements – Methods of testing and required test results
IEC 61108-1:2003, Maritime navigation and radiocommunication equipment and systems –
Global navigation satellite systems (GNSS) – Part 1: Global positioning system (GPS) –
Receiver equipment – Performance standards, methods of testing and required test results
IEC 61108-4, Maritime navigation and radiocommunication equipment and systems – Global
navigation satellite systems (GNSS) – Part 4: Shipborne DGPS and DGLONASS maritime
radio beacon receiver equipment – Performance requirements, methods of testing and
required test results
– 8 – 61108-3 © IEC:2010(E)
IEC 61162 (all parts), Maritime navigation and radiocommunication equipment and systems –
Digital interfaces
IEC 61162-1, Maritime navigation and radiocommunication equipment and systems – Digital
interfaces – Part 1: Single talker and multiple listeners
IEC 62288, Maritime navigation and radiocommunication equipment and systems –
Presentation of navigation-related information on shipborne navigational displays – General
requirements – Methods of testing and required test results
IMO resolution A.694(17), General requirements for shipborne radio equipment forming part
of the Global maritime distress and safety system (GMDSS) and for electronic navigational
aids
IMO resolution A.915(22), Revised maritime policy and requirements for a future Global
Navigation Satellite System (GNSS)
IMO resolution A.953(23), World-wide radionavigation system
IMO resolution MSC.233(82), Adoption of the Performance Standards for Shipborne GALILEO
Receiver Equipment
ITU-R Recommendation M.823-3, Technical characteristics of differential transmissions for
Global Navigation Satellite Systems from maritime radio beacons in the frequency band
283.5-315 kHz in Region 1 and 285-325 kHz in Regions 2 and 3
RTCM 10402 RTCM Recommended Standards for Differential GNSS (Global Navigation
Satellite Systems) Service, Version 2.4
3 Terms, definitions and abbreviations
For the purposes of this document, the following terms, definitions and abbreviations apply.
NOTE All definitions and abbreviations used are the same as those used in the Galileo performance signal
specification.
3.1 Terms and definitions
3.1.1
integrity
ability of the system to provide users with warnings within a specified time when the system
should not be used for navigation
3.2 Abbreviations
Compass Beidou-2 GNSS (China)
COG Course Over Ground
CW Continuous Wave
dGalileo, dGPS, dGLONASS Differential Galileo, GPS, GLONASS
EUT Equipment Under Test
FDE Fault Detection and Exclusion
GNSS Global Navigation Satellite System
GPS Global Positioning System
GLONASS GLObal Navigation Satellite System
GTRF Galileo Terrestrial Reference Frame

61108-3 © IEC:2010(E) – 9 –
ITRF International Terrestrial Frame
HAL Horizontal Alert Limit
HDOP Horizontal Dilution Of Precision
HPL Horizontal Protection Limit
HMI Hazardous Misleading Information
MDE Marginally Detectable Error
NB Narrow Band
pdf Probability distribution function
PDOP Position Dilution Of Precision
P Probability of hazardous misleading error
HMI
PVT Position, Velocity, Time
RAIM Receiver Autonomous Integrity Monitor
RF Radio Frequency
RFCS Radio Frequency Constellation Simulator
RFI Radio Frequency Interference
SDME Speed and Distance Measuring Equipment
SIS Signal in space
SOG Speed Over Ground
SV Space Vehicle
TTA Time-to-alarm
ULS Up-Link Station
UTC Universal Time Coordinated
VAL Vertical Alert Limit
VPL Vertical Protection Limit
WB Wide Band
4 Minimum performances standards
4.1 Object
Galileo provides two different services of use for the maritime community.
(M.233/A1.3) The Galileo Open Service provides positioning, navigation and timing services,
free of direct user charges. The Open Service can be used on one (L1, E5a, E5b), two (L1
and E5a or L1 and E5b) or three (L1, E5a and E5b) frequencies.
(M.233/A1.4) The Galileo Safety of Life Service can be used on one (L1 or E5b) or two (L1
and E5b) frequencies. Each of the L1 and E5b frequencies carries a navigation data message
that includes integrity information. The E5a frequency does not include integrity data.
(M.233/A1.5) Galileo receiver equipment intended for navigation purposes on ships of speeds
not exceeding 70 knots, in addition to the general requirements specified in IEC 60945, shall
comply with the following minimum performance requirements.
(M.233/A1.6) These standards cover the basic requirements of position fixing, determination
of course over ground (COG), speed over ground (SOG) and timing, either for navigation
purposes or as input to other functions. The standards do not cover the other computational
facilities which may be in the equipment nor cover the requirements for any other systems
that may take input from the Galileo receiver. Other computational activity, input/output

– 10 – 61108-3 © IEC:2010(E)
activity or extra display functions which may be provided shall not degrade the performance of
the equipment below the minimum performance standards set out in this standard.
4.2 Galileo receiver equipment
(See 5.6.1)
4.2.1 Minimum facilities
(M.233/A2.1) The words “Galileo receiver equipment” as used in these performance standards
include all the components and units necessary for the system properly to perform its
intended functions. The Galileo receiver equipment shall include the following minimum
facilities:
.1 antenna capable of receiving Galileo signals;
.2 Galileo receiver and processor;
.3 means of accessing the computed latitude/longitude position;
.4 data control and interface; and
.5 position display and, if required, other forms of output.
NOTE If Galileo forms part of an approved Integrated Navigation System (INS), requirements of .3, .4 and .5 may
be provided within the INS.
4.2.2 Configuration
The Galileo receiver equipment may be supplied in one of several configurations to provide
the necessary position information. Examples are as follows:
– stand-alone receiver with means of accessing computed position via a keyboard with the
positional information suitably displayed;
– Galileo black box receiver fed with operational parameters from external devices/remote
locations and feeding an integrated system with means of access to the computed position
via an appropriate interface, and the positional information available to at least one remote
location.
The above examples should not be implied as limiting the scope of future development.
4.2.3 Quality assurance
The equipment shall be designed, produced and documented by companies complying with
approved quality systems as applicable.
4.3 Performance standards for Galileo receiver equipment
4.3.1 General
(See 5.6.2)
(M.233/A3.1) The Galileo receiver equipment shall be capable of receiving and processing the
Galileo positioning and velocity, and timing signals on:
i) for a single frequency receiver, the L1 frequency alone. The receiver shall use the
ionospheric model broadcast to the receiver by the constellation to generate ionospheric
corrections;
ii) for a dual frequency receiver, either the L1 and E5b frequencies or the L1 and E5a
frequencies. The receiver shall use dual frequency processing to generate ionospheric
corrections;
A detailed description of the Galileo Navigation Signal Characteristics is given in Annex A.

61108-3 © IEC:2010(E) – 11 –
(M.233/A3.2) The Galileo receiver equipment shall provide position information in latitude
and longitude in degrees, minutes and thousandths of minutes;
NOTE Galileo uses Galileo Terrestrial Reference Frame System (GTRF) datum which is a realization of the
International Terrestrial Reference Frame (ITRF) system and differs from WGS 84 by less than 5 cm worldwide.
(M.233/A3.3) The Galileo receiver equipment shall provide time referenced to universal time
coordinated UTC (Bureau International des Poids et Measures).
4.3.2 Equipment output
(See 5.6.3)
(M.233/A3.4) The Galileo receiver equipment shall be provided with at least two outputs from
which position information, UTC, course over ground (COG), speed over ground (SOG) and
alarms can be supplied to other equipment. The output of position information shall be based
on the WGS84 datum and shall be in accordance with IEC 61162. The output of UTC, course
over ground (COG), speed over ground (SOG) and alarms shall be consistent with the
requirements of M.233/A3.16 and M.233/A3.18;
(M.233/A3.17) The Galileo receiver equipment shall have at least one normally closed contact
which shall indicate failure of the Galileo receiver equipment;
(M.233/A3.18) The Galileo receiver equipment shall have a bidirectional interface to facilitate
communication so that alarms can be transferred to external systems and so that audible
alarms from the Galileo receiver can be acknowledged from external systems; the interface
shall comply with IEC 61162.
For reporting purposes the following sentences shall be available in any combination.
DTM – Datum reference (see IEC 61162-1)
GBS – GNSS Satellite fault detection (see IEC 61162-1)
GFA – GNSS Fix Accuracy and integrity (see IEC 61162-1)
GNS – GNSS fix data (see IEC 61162-1)
RMC – Recommended minimum specific GNSS data (see IEC 61162-1)
ZDA – Time and date (see IEC 61162-1)
If a sentence uses a datum other than WGS-84 then the DTM sentence shall be used in
compliance with IEC 61162-1.
For alarm reporting purposes the following sentences shall be available.
ALR – Set Alarm State (see IEC 61162-1)
ACK – Acknowledge Alarm (see IEC 61162-1)
In addition, for integrating with other navigational aids, the following sentences may be
available in any combination.
GRS – GNSS range residuals (see IEC 61162-1)
GSA – GNSS DOP and active satellites (see IEC 61162-1)
GST – GNSS pseudo-range error statistics (see IEC 61162-1)
GSV – GNSS satellites in view (see IEC 61162-1)
NOTE GBS, GRS, GSA, GST, GSV are required to support external integrity checking. They are to be
synchronized with corresponding fix data (GNS).

– 12 – 61108-3 © IEC:2010(E)
4.3.3 Accuracy
(See 5.6.4)
4.3.3.1 Static position accuracy
(M.233/A3.5) The Galileo receiver equipment shall have static accuracy such that the position
of the antenna is determined to within:
i) 15 m horizontal (95 %) and 35 m vertical (95 %) for single frequency operations on the L1
frequency;
ii) 10 m horizontal (95 %) and 10 m vertical (95 %) for dual frequency operations on L1 and
E5a or L1 and E5b frequencies.
NOTE The minimum accuracy requirements specified for dual frequency processing are based on the
performance requirements established in IMO resolution A.915(22) and IMO resolution A.953(23) for navigation in
harbour entrances, harbour approaches and coastal waters. The Galileo Safety of Life service is expected be able
to provide better accuracy (4 m horizontal 95 % and 8 m vertical 95 %).
4.3.3.2 Dynamic position accuracy
(M.233/A3.6) The Galileo receiver equipment shall have dynamic accuracy equivalent to the
static accuracy specified in 4.3.3.1 above under the sea states and motion experienced in
ships as described in IMO resolution A.694(17), IEC 60721-3-6 and IEC 60945.
4.3.4 Acquisition
(See 5.6.5)
(M.233/A3.9) The Galileo receiver equipment shall be capable of selecting automatically the
appropriate satellite-transmitted signals to determine the ship’s position and velocity, and time
with the required accuracy and update rate;
(M.233/A3.12) The Galileo receiver equipment shall be capable of acquiring position, velocity
and time to the required accuracy within 5 min when there is no valid almanac data (cold
start);
(M.233/A3.13) The Galileo receiver equipment shall be capable of acquiring position, velocity
and time to the required accuracy within 1 min when there is valid almanac data (warm start);
(M.233/A3.14) The Galileo receiver equipment shall be capable of re-acquiring position,
velocity and time to the required accuracy within 1 min when there has been a service
interruption of 60 s or less;
Acquisition is defined as the processing of Galileo satellite signals to obtain a position fix
within the required accuracies.
Three conditions of the Galileo receiver equipment are set out under which the minimum
performance standards shall be met.
Condition A
Initialization (cold start) – the equipment has
– been transported over large distances (>1 000 km to <10 000 km) without power or Galileo
signals or by the deletion of the current almanac; or
– not been powered for >7 days.
Condition B
Warm start – the equipment has a valid almanac (Power outage and/or interruption of Galileo
signal reception for at least 24 h).

61108-3 © IEC:2010(E) – 13 –
Condition C
Brief interruption of power for 60 s.
No user action other than applying power and providing a clear view from the antenna for the
Galileo signals shall be necessary, from any of the initial conditions above, in order to achieve
the required acquisition time limits in Table 1.
Table 1 – Acquisition time limits
Equipment condition A B C
Acquisition time limits (min) 5 1 1
4.3.5 Antenna and input/output connections
(See 5.6.6)
(M.233/A5) Precautions shall be taken to ensure that no permanent damage can result from
an accidental short circuit or grounding of the antenna or any of its input or output
connections or any of the Galileo receiver equipment inputs or outputs for a duration of 5 min.
4.3.6 Antenna design
(See 5. 6. 7 )
(M.233/A2.2) The antenna design shall be suitable for fitting at a position on the ship which
ensures a clear view of the satellite constellation, taking into consideration any obstruction
that might exist on the ship.
4.3.7 Dynamic range
(See 5. 6. 8 )
(M.233/A3.10) The Galileo receiver equipment shall be capable of acquiring satellite signals
with input signals having carrier levels in the range of –128 dBm to –118 dBm. Once the
satellite signals have been acquired, the equipment shall continue to operate satisfactorily
with satellite signals having carrier levels down to –131 dBm.
4.3.8 Protection from specific interfering signals
(See 5. 6. 9 )
The Galileo receiver equipment shall meet the following requirements:
a) in a normal operating mode, i.e. switched on and with antenna attached, it is subject to
radiation of 3 W/m at a frequency of 1636,5 MHz for 10 min. When the unwanted signal is
removed and the Galileo receiver antenna is exposed to the normal Galileo satellite
signals, the Galileo receiver equipment shall calculate valid position fixes within 5 min
without further operator intervention;
NOTE 1 This is equivalent to exposing a Galileo antenna to radiation from an Inmarsat Fleet77 antenna at 10 m
distance along the bore sight.
b) in a normal operating mode, i.e. switched on, and with antenna attached, it is subject to
radiation consisting of a burst of 10 pulses, each 1,0 μs to 1,5 μs long on a duty cycle of
1 600:1 at a frequency lying between 2,9 GHz and 3,1 GHz at power density of about
7,5 kW/m . The condition shall be maintained for 10 min with the bursts of pulses
repeated every 3 s. When the unwanted signal is removed and the Galileo receiver
antenna is exposed to the normal Galileo satellite signals, the receiver shall calculate
valid position fixes within 5 min without further operator intervention.
NOTE 2 This condition is approximately equivalent to exposing the antenna to radiation from a 60 kW "S" Band
marine radar operating at a nominal 1,2 μs pulse width at 600 pulses/s using a 4 m slot antenna rotating at

– 14 – 61108-3 © IEC:2010(E)
20 r/min with the Galileo antenna placed in the plane of the bore site of the radar antenna at a distance of 10 m
from the centre of rotation.
Advice shall be given in the manual for adequate installation of the antenna unit, to minimize
interference with other radio equipment such as marine radars, Inmarsat ship earth stations,
etc.
4.3.9 Position update
(See 5. 6. 1 0)
(M.233/A3.15) The Galileo receiver equipment shall generate and output to a display and
digital interface (conforming to IEC 61162) a new position solution at least once every 1 s for
conventional craft and at least once every 0,5 s for high speed craft;
NOTE For high speed craft purposes the equipment should provide an IEC 61162-2 interface with a position
update rate of 2 Hz.
(M.233/A3.7) The Galileo receiver equipment shall have position resolution equal or better
than 0,001 minutes of latitude and longitude;
4.3.10 Differential Galileo input
(See 5. 6. 1 1)
(M.233/A3.19) The Galileo receiver equipment shall have the facilities to process differential
Galileo (dGalileo) data fed to it in accordance with the standards of Recommendation ITU-R
M.823 and an appropriate RTCM standard, and provide indication of the reception of dGalileo
signals and whether they are being applied to the ship’s position.
When a dual frequency Galileo receiver is equipped with a differential receiver, performance
standards for static and dynamic accura
...