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Setting out the necessary technical and operational specifications for implementing version 3 of the EGNOS system
ANNEX

ANNEX — TECHNICAL AND OPERATIONAL SPECIFICATIONS

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

      EGNOS v2EGNOS 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 Maritimen.a.
      • Oceanic areas
      • Navigation in harbour entrance, harbour approaches and coastal waters
      Capability of the system to be replicatedyesyes
      Compatibility of service performance at user level vs. previous versionn.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 availability0,99
      Service AreaEU-MS + Norway and Switzerland
      Guarantee of serviceNo
      Accessibility
      • Through compatible receivers within the EGNOS service area
      • No specific authorisation/certification required
      Timing service
      EGNOS Network time to UTC system time accuracy20 ns 3sigma
      EGNOS Network time to GPS system time accuracyMaximum 50 ns
      Availability of timing service99 %
      Guarantee of serviceno
      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 specificationsProducts provided directly by the systemRIMS raw data
      EGNOS broadcast message data
      EGNOS health status data
      Latency(3)2 sec
      Availability0,999
      AccessibilityProducts 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 ApproachApproach with Vertical Guidance APV-I (legacy service)LPV 200 ApproachCat I Precision Approach
      StandardsAnnexe V, point 3(a) of Implementing Regulation (EU) No 1035/2011, as applicable
      Lateral accuracy220 m16 m16 m16 m
      Vertical accuracyNot applicable20 m4 m4 m
      VNSE — fault-free conditionsN/AN/A

      10 m

      with probability of 10–7/150 s

      N/A
      VNSE — system failure conditionsN/AN/A

      15 m

      with probability of 10–5/150 s

      N/A
      Integrity risk1,10–7/hour2,10–7/150 s2,10–7/150 s2,10–7/150 s
      Time To Alarm10 s10 s6 s6 s
      HAL556 m40 m40 m40 m
      VALNot applicable50 m35 m10 m
      Continuity risk1,10–5/hour8,10–6/15 s8,10–6/15 s8,10–6/15 s
      SoL Service(5) availability0,9990,990,99 to 0,9990,99
      Service areaFlight information regions (FIRs) of EU-MS + Norway and SwitzerlandLandmasses(6) of EU-MS + Norway and SwitzerlandLandmasses of EU-MS + Norway and SwitzerlandLandmasses of EU-MS + Norway and Switzerland
      Target service area extensionArticle 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 serviceYes
      AccessibilityThrough SBAS-compatible receivers

      4.2.Maritime service(8)

      Navigation in harbour entrances,

      Harbour approaches and coastal waters

      StandardsIMO Resolution A.915(22) and A.1046(27)
      Lateral accuracy10 m
      Vertical accuracyNot applicable
      Integrity risk1,10–5/3 hours
      Time To Alarm10 s
      HAL25 m
      VALNot applicable
      Continuity risk3,10–4/15 minutes
      SoL Service availability0,998
      Service AreaNational Waters(9) of EU-MS + Norway and Switzerland
      Guarantee of serviceYes
      AccessibilityThrough SBAS-compatible receivers