Commission Implementing Decision (EU) 2015/1183 of 17 July 2015 setting out the necessary technical and operational specifications for implementing version 3 of the EGNOS system
Date: 2015-07-17
Institutions: European Commission
Subjects: EU programme, civil aviation, maritime transport, satellite communications, satellite navigation








L_2015192EN.01002001.xml










18.7.2015   


EN


Official Journal of the European Union


L 192/20








            COMMISSION IMPLEMENTING DECISION (EU) 2015/1183
of 17 July 2015
         
setting out the necessary technical and operational specifications for implementing version 3 of the EGNOS system


THE EUROPEAN COMMISSION,

Having regard to the Treaty on the Functioning of the European Union,


Having regard to Regulation (EU) No 1285/2013 of the European Parliament and of the Council of 11 December 2013 on the implementation and exploitation of European satellite navigation systems and repealing Council Regulation (EC) No 876/2002 and Regulation (EC) No 683/2008 of the European Parliament and of the Council (1), and in particular Article 12(3)(d) thereof,

Whereas:







(1)


Article 12 of Regulation (EU) No 1285/2013 provides that the Commission shall have overall responsibility for the EGNOS programme and confers on it implementing powers to determine the technical and operational specifications necessary for EGNOS system evolution.












(2)


The EGNOS system has already evolved, as version 1 was introduced in the 2000s, followed by version 2 in 2009. The three services offered by the system, namely the open service, the commercial data dissemination service (‘EDAS’) and the safety-of-life service (‘SoL’) defined in Article 2(5) of Regulation (EU) No 1285/2013 became operational on 30 October 2009, 26 July 2012 and 12 March 2011 respectively.












(3)


In order to comply with the characteristics and meet the specific objectives of the EGNOS programme referred to in Article 2 of Regulation (EU) No 1285/2013, it is now important to determine the technical and operational specifications of a version 3 of the system. This version 3, which should be brought into service in the 2020s, would be an improvement on version 2 because, in technical terms, it would include on the one hand the monitoring and correction of the signals of the open service offered by the system established under the Galileo programme, and on the other hand the use of double frequency, both for the GPS system and for that of the Galileo programme.












(4)


The technical evolution of version 2 to version 3 would improve the geographic coverage of the three services offered by the system and enhance their performance.












(5)


With regard to geographic coverage, system evolution would aim, first of all, to guarantee coverage of all territories of the EU Member States geographically located in Europe, including the Azores, the Canary Islands and Madeira. An extension of this coverage beyond the borders of the EU Member States to include the EU candidate countries and the countries involved in the EU neighbourhood policy would also be possible, subject to technical feasibility and on the basis of international agreements, under the conditions set out in the last subparagraph of Article 2(5) of Regulation (EU) No 1285/2013.












(6)


Performance, mainly that of the ‘SoL’ service, should be improved in version 3 of the system, compared to version 2.












(7)


For the open service, an improvement in performance would involve providing precise data in terms of time measurement, such as differences between the time used by EGNOS on the one hand, and the UTC time and the GPS system time on the other hand.












(8)


For the ‘EDAS’ service, this improvement would above all serve to reduce the data-transmission time to two seconds and reduce the lapse of time during which the service is not available.












(9)


However, the performance enhancement achieved by version 3 of the EGNOS system should concern mainly the ‘SoL’ service, particularly for the sectors of civil aviation and maritime transport.












(10)


For civil aviation and in order to adequately meet air navigation needs, in particular with respect to the optimisation of traffic flow between various geographical areas, version 3 should provide a new ‘Cat I Precision Approach’ service in addition to the three services already on offer in version 2, i.e. the ‘En-Route — Non-precision Approach’, ‘Approach with Vertical Guidance APV-I’ and ‘LPV 200 Approach’. Furthermore, the availability of the ‘LPV 200 Approach’ service would be significantly increased because the time period during which this service is available should fall within the range of 0,99 to 0,999.












(11)


In civil aviation, it is also important to ensure that the SoL service continues to comply with Commission Implementing Regulation (EU) No 1035/2011 (2). Indeed, as set out in recital 14 of this Regulation, air navigation service providers should operate in compliance with the relevant standards of the International Civil Aviation Organisation, pending the complete transposition of the standards of that international organisation into EU law.












(12)


For maritime transport, version 3 of the EGNOS system should introduce the ‘SoL’ service in accordance with the international standards laid down by the International Maritime Organisation, allowing new EGNOS applications which, thanks to their greater precision, would benefit this sector in terms of effectiveness and safety. To this end and bearing in mind the constraints inherent to navigation close to the coast, on the approach to and when entering ports, the extension of the ‘SoL’ service to the maritime sector should in particular provide for a very high degree of availability, over 0,998 on a scale ranging from 0 to 1, guaranteeing the integrity of the service in an interval of less than ten seconds and lateral precision of less than 10 metres.












(13)


In addition to this, in order not to affect EGNOS users or compromise the current commercial applications, the technical and operational specifications of version 3 of the EGNOS system should be compatible with those of version 2 so as not to jeopardise what has been achieved so far, or result in degrading current possible uses, to the detriment of users.












(14)


In order to complete the technical evolution of version 2 to version 3 of the system, the technical and operational specifications set out in the Annex must be established.












(15)


The measures provided for in this Decision comply with the opinion of the committee established pursuant to Article 36(1) of Regulation (EU) No 1285/2013,





HAS ADOPTED THIS DECISION:



Article 1
The technical and operational specifications of version 3 of the EGNOS system are set out in the Annex.


Article 2
This Decision shall enter into force on the twentieth day following that of its publication in the Official Journal of the European Union.




Done at Brussels, 17 July 2015.


For the Commission


The President

Jean-Claude JUNCKER
            





(1)  
            OJ L 347, 20.12.2013, p. 1.

(2)  Commission Implementing Regulation (EU) No 1035/2011 of 17 October 2011 laying down common requirements for the provision of air navigation services and amending Regulations (EC) No 482/2008 and (EU) No 691/2010 (OJ L 271, 18.10.2011, p. 23).




ANNEX

TECHNICAL AND OPERATIONAL SPECIFICATIONS

1.   Main characteristics of EGNOS v3 which are maintained or improved from, or added to EGNOS v2








 


EGNOS v2


EGNOS v3




Receivers modes








—


Mono-frequency mono-constellation: GPS L1












—


Mono-frequency mono-constellation: GPS L1










—


Dual-frequency mono-constellation: GPS L1/L5 or Galileo E1/E5a










—


Dual-frequency dual-constellation: GPS L1/L5 + Galileo E1/E5a








Specific services for Aviation








—


En-route/non-precision approach










—


Approach with vertical guidance APV-I










—


LPV-200 approach












—


En-route/non-precision approach










—


Approach with vertical guidance APV-I










—


LPV-200 approach










—


CAT-I precision approach








Specific services for Maritime


n.a.








—


Oceanic areas










—


Navigation in harbour entrance, harbour approaches and coastal waters








Capability of the system to be replicated


yes


yes




Compatibility of service performance at user level vs. previous version


n.a.


yes




Limitation of services (1)









—


Safety of Life area limited to [40W, 40E], [20N, 70N]










—


Maximum number of stations limited to 60






None (2)





2.   Open service technical and operational specifications







 


Open service




Lateral accuracy (95 %)


3 m




Vertical accuracy (95 %)


4 m




OS availability


0,99




Service Area


EU-MS + Norway and Switzerland




Guarantee of service


No




Accessibility








—


Through compatible receivers within the EGNOS service area










—


No specific authorisation/certification required

















 


Timing service




EGNOS Network time to UTC system time accuracy


20 ns 3sigma




EGNOS Network time to GPS system time accuracy


Maximum 50 ns




Availability of timing service


99 %




Guarantee of service


no




Accessibility








—


Through compatible receivers within the EGNOS service area










—


No specific authorisation/certification required








3.   EGNOS Data Access service (EDAS) technical and operational specifications








 


EDAS




Service specifications


Products provided directly by the system


RIMS raw data




EGNOS broadcast message data




EGNOS health status data




Latency (3)



2 sec




Availability


0,999




Accessibility


Products provided to end users through specific service providers connected to the EGNOS server




Server specifications


Secured architecture for worldwide access
Sufficient bandwidth connectivity




4.   Safety-of-Life service technical and operational specifications

4.1.   Aviation service (4)










 


En-route — Non-Precision Approach


Approach with Vertical Guidance APV-I (legacy service)


LPV 200 Approach


Cat I Precision Approach




Standards


Annexe V, point 3(a) of Implementing Regulation (EU) No 1035/2011, as applicable




Lateral accuracy


220 m


16 m


16 m


16 m




Vertical accuracy


Not applicable


20 m


4 m


4 m




VNSE — fault-free conditions


N/A


N/A


10 m
with probability of 10–7/150 s


N/A




VNSE — system failure conditions


N/A


N/A


15 m
with probability of 10–5/150 s


N/A




Integrity risk


1,10–7/hour


2,10–7/150 s


2,10–7/150 s


2,10–7/150 s




Time To Alarm


10 s


10 s


6 s


6 s




HAL


556 m


40 m


40 m


40 m




VAL


Not applicable


50 m


35 m


10 m




Continuity risk


1,10–5/hour


8,10–6/15 s


8,10–6/15 s


8,10–6/15 s




SoL Service (5) availability


0,999


0,99


0,99 to 0,999


0,99




Service area


Flight information regions (FIRs) of EU-MS + Norway and Switzerland


Landmasses (6) of EU-MS + Norway and Switzerland


Landmasses of EU-MS + Norway and Switzerland


Landmasses of EU-MS + Norway and Switzerland




Target service area extension


Article 2(5) of Regulation (EU) No 1285/2013




Performance of reversion modes


EGNOS V3 shall deliver LPV 200 (7) service level over its Service Area with 99 % availability when reverting to the use of the Galileo constellation only.
EGNOS V3 shall deliver LPV 200 service level in the land masses of the Service Area with 99 % availability upon complete loss of L5/E5a frequency at user level.




Guarantee of service


Yes




Accessibility


Through SBAS-compatible receivers







4.2.   Maritime service (8)







 


Navigation in harbour entrances,
Harbour approaches and coastal waters




Standards


IMO Resolution A.915(22) and A.1046(27)




Lateral accuracy


10 m




Vertical accuracy


Not applicable




Integrity risk


1,10–5/3 hours




Time To Alarm


10 s




HAL


25 m




VAL


Not applicable




Continuity risk


3,10–4/15 minutes




SoL Service availability


0,998




Service Area


National Waters (9) of EU-MS + Norway and Switzerland




Guarantee of service


Yes




Accessibility


Through SBAS-compatible receivers






(1)  User access for open service and safety of life services limited to visibility area of the geostationary satellites.

(2)  Absence of limitation to allow the design of EGNOS v3 to include additional stations in order to extend, in a continuous manner, the EGNOS service area in accordance with Article 2(5) of Regulation (EU) No 1285/2013.

(3)  Latency is the time elapsed since the transmission of the last bit of the navigation message from the space segment (EGNOS and GPS/Galileo satellites) until the data leave the EGNOS server.

(4)  The performance specifications included in this table address only signal-in-space contributions.

(5)  A range is given for service availability for approach procedure. The bottom of the range shall correspond to the availability expected for the GPS L1-only service. The top of the range shall be available for users equipped with a dual frequency GPS L1-L5 receiver or a combined GPS/Galileo dual-frequency receiver.

(6)  
            ‘Land masses of an area’ means any land territory, including islands, in the FIR of that area except for the Cat I service for which coverage of Azores, Madeira and Canary Islands are excluded.

(7)  Until sufficient Galileo performance is demonstrated, APV-I service level is accepted.

(8)  The performance specifications included in this table address only signal-in-space contributions.

(9)  National (or territorial) waters are defined in the 1982 United Nations Convention on the Law of the Sea as waters extending at most 12 nautical miles from the coast line.



Appendix

ACRONYMS







APV


Approach Procedure with Vertical Guidance




CAT


Category




EDAS


EGNOS Data Access Service




EGNOS


European Geostationary Navigation Overlay Service




EU-MS


European Union Member States




FIR


Flight Information Region




Galileo E1


E1 frequency of Galileo system, corresponding to 1 575,42 MHz




Galileo E5a


E5a frequency of Galileo system, corresponding to 1 176,45 MHz




GPS


Global Positioning System




GPS L1


L1 frequency of GPS system, corresponding to 1 575,42 MHz




GPS L5


L5 frequency of GPS system, corresponding to 1 176,45 MHz




HAL


Horizontal Alert Limit




ICAO


International Civil Aviation Organization




IMO


International Maritime Organization




LPV


Localizer Performance with Vertical guidance




OS


Open Service




RIMS


Ranging and Integrity Monitoring Station




SARPs


Standard and Recommended Practices




SBAS


Satellite-Based Augmentation System




SoL


Safety of Life




UTC


Coordinated Universal Time




VAL


Vertical Alert Limit




VNSE


Vertical Navigation System Error