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

• CELEX: Implementing Decision (EU) 2015/1183
• Articles: 3

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 .

Schedules & Appendices

ANNEX

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.