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The Galileo support to the Search and Rescue Programme (SAR/Galileo). Outline. How SAR/Galileo integrate with Cospas-Sarsat service? SAR/GALILEO ARCHITECTURE GROUND SEGMENT CONCEPT DOWNLINK COORDINATION

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Presentation Transcript
slide2

Outline

  • How SAR/Galileo integrate with Cospas-Sarsat service?
      • SAR/GALILEO ARCHITECTURE
      • GROUND SEGMENT CONCEPT
      • DOWNLINK COORDINATION
  • Does improvement of location of alerts imply that ship borne EPIRBs be fitted with GNSS receiver?
      • SAR/GALILEO EXPECTED SERVICE PERFORMANCE
  • Does the implementation of the return link imply that ship borne EPIRBs be fitted with GNSS receiver?
slide3

SAR/Galileo MISSION REQUIREMENTS

and BENEFITS

  • FULL BACKWARD COMPATIBILITY WITH COSPAS-SARSAT SYSTEM
  • ENHANCEMENT OF EXISTING SAR AIDED TRACKING SYSTEM:

- IMPROVEMENT OF PERFORMANCE:

        • Multi satellite visibility
        • Quasi real-time distress detection
        • Increased distress location accuracy

- INTRODUCTION OF NEW SERVICES:

        • Implementation of a return link
  • FACILITATING LOW-COST SAR USER EQUIPMENT WITH INTEGRATED GALILEO RECEIVERS (« ADVANCED BEACONS »)
slide4

Support to Search And Rescue Services

Capacity

Capacity

Each satellite capable to relay

Each satellite capable to relay

signals from 150 simultaneously

signals from 150 simultaneous

active beacons

active beacons

Message received at MEOLUT

Detection Probability

in < 5 min with P > 0.99

< 5 Km with P > 0.95

Location Error Probability

Acknowledgement Data Rate

Acknowledgement Data Rate

(Return Link service)

6 messages of 100 bits each per

6 messages of 100 bits each per

minute

minute

99.8%

Availability

Availability

slide5

Galileo satellite with SAR Payload

SAR Tx antenna

(L band)

SAR Rx antenna

(406 MHz)

Navigation antenna

slide6

Integration of the MEOSAR component in the International SAR Satellite System

GEO Satellites

MEO Satellites

1544MHz

406 MHz

LEO Satellites

Rescue

Team

LUT

Rescue Coordination Center

Mission Control Center

Emergency

beacon

slide8

SAR/Galileo Interfaces and Data Flow

13

Galileo Space Segment

SAR payload

Navigation payload

12

1

Galileo Ground Segment

2

Mission Up-link (ULS)

11

Distress Beacon

MGF

ISSS Ground Segment

10

MEOLUT

MCC

MCF

3

RLSP

A

9

6

D

7

8

Nodal MCC

SPF

B

4

C

5

SAR Operators

RCC

slide9

SAR/Galileo Ground Segment concept

  • SAR/Galileo CONCEPT WILL FACILITATE INTERNATIONAL COOPERATION FOR THE PROVISION OF THE GROUND SEGMENT:

- MEOLUT COVERAGE:

Six MEOLUTs are sufficient for global coverage

- OMNI DIRECTIONAL ANTENNA MEOLUT:

Simple concept, should reduce implementing costs and facilitate operations

  • SAR/Galileo RETURN LINK OPERATIONS REQUIRE THE DETAILED DEFINITION OF INTERFACES BETWEEN THE GALILEO GROUND SEGMENT AND THE SAR OPERATIONAL GROUND SEGMENT
slide10

Coverage area of a MEOLUT

Common visibility between the beacon and the MEOLUT for 100% of the time of at least N satellites

Coverage: localisation inside REQs  5,000 Km radius

slide13

SAR/Galileo expected performance (number of satellites in view)

Beacon localisation error for 3 to 6 MEOs in common view

slide14

SAR/Galileo expected performance (evolution with time)

Localisation

of non-GNSS

equipped

Beacons

(red line

is the current

requirement)

slide15

Summary andconclusion (1/2)

  • SAR/Galileo will be the European MEOSAR component for the support to the International Search and Rescue Programme
  • The MEO constellation is a unique opportunity to improve the existing international SAR system: permanent availability of space segment; favourable space to Earth geometric configurations, synergy with the navigation information.
  • Several MEO initiatives are been considered alongside Galileo: GPS / SAR and GLONASS/ SAR
slide16

Summary and conclusions (2/2)

  • SAR/Galileo service will provide an enhanced support by:
    • Near real-time alert localisation and message detection
    • Higher beacon localisation error (below 2 Km average in less than 5 min)
    • Return link service (false alert rate reduction)
    • High availability
    • Global coverage
    • Ground segment concept will simplify operations