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International Civil Aviation Organization. GALILEO CAR/SAM ATN/GNSS Seminar Varadero, Cuba, 6 to 9 May 2002. Presentation GNSS 4.3 by E. Chatre. GALILEO Overview High Level Architecture Consist of 30 (27+3) satellites and associated ground infrastructure

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international civil aviation organization
International Civil Aviation Organization

GALILEO

CAR/SAM ATN/GNSS Seminar

Varadero, Cuba, 6 to 9 May 2002

Presentation GNSS 4.3 by E. Chatre

slide2
GALILEO Overview
  • High Level Architecture
    • Consist of 30 (27+3) satellites and associated ground infrastructure
      • Best solution in terms of robustness and performance homogeneity, including northern latitudes
    • Use CDMA signals on 4 frequencies
    • Offer different services (OS-SoL-CS and PRS + SAR)
    • Implement concept of Global Integrity
    • Certify system performance
    • Fully Operational by 2008
slide3
Space Segment
  • Constellation Configuration
signal baseline
Signal Baseline
  • Open and Safety Of Life Signals
slide5
Space Segment
  • Constellation Performance
  • Horiz accuracy around 4m (95%)
  • Vertical accuracy around 8m (95%)
slide6

GALILEO In Flight Configuration

Navigation payload: 70-80 Kg / 850 W

Search and Rescue (SAR)

transponder: ca. 20 kg

Overall Spacecraft:

650 Kg / 1.5 kW class

Launcher Options:

Ariane, Proton, Soyuz, …...

Space Segment

  • Satellite Payload
slide8

GALILEO Ground Control Stations

for illustration only

slide9

GALILEO

LOCAL

COMPONENTS

CORE SYSTEM

MEO CONSTELLATION

IMS

Local

Infra-

struct.

regional uplink

Network

IULS

….

REGIONAL

NAV SIS

NAV SIS

Communication link

COMPONENTS

ICC

NAV SIS

NAV SIS

.

.

.

.

.

.

S-band uplink

C-band uplink

GSS

Network

IMS

Network

Local

Infra-

struct.

TTC uplink

Mission uplink

ICC

Communication link

INTEGRITY DETERMINATION

NAVIGATION CONTROL &

IMS

& DISSEMINATION

CONSTELLATION MANAGEMENT

GCC

L-band

UHF

NAV

SAR

USER SEGMENT

External

COSPAS-SARSAT

Complementary

GROUND SEGMENT

Systems

System Boundaries

slide10
Local Elements
  • Viewed as an integral part of the overall system

-Recognised that a great many applications will require Local Elements i.e. Category III landing

- Existence of capabilities considered and defined within the High Level documents of GALILEO

  • Local services may be offered by the Galileo Operating Company or external service providers
  • Possible to offer certified services where necessary
  • Demonstrators of Local Elements will form part of the GALILEO development process and indicate achievable performance levels
slide11
Local Elements
  • Performance Enhancement in the following:
    • Position, Velocity, Time
      • Differential Code
      • Carrier - TCAR
    • Availability
      • Pseudolite
    • Integrity
      • Time To Alarn (TTA), and alam limit
    • Communication
      • Single or bi-directional
      • Voice, Data or Both
  • Local Elements will offer different combinations of these enhancements to different extents over different service volumes
  • Base level performances will be specified
slide12
GALILEO Schedule
  • 4 Phases
    • Definition Phase
      • Upto end 2001
      • Initial definition of the GALILEO requirements and architecture
    • Development and Validation
      • 2002 through 2005
      • Consolidation of Mission Requirements
      • Development of satellites and ground based components
      • In Orbit validation
    • Deployment
      • 2006 through 2007
      • Construction and launch of satellites
      • Installation of complete ground segment
    • Operations
      • 2008 onwards
slide13

80 M€

1.250 B€

2.150 B €

220 M€ p.a.

2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 ….

GALILEO Schedule

DEF

Initial Galileo

Full Galileo

DDV

Operational

Galileo

Definition

Phase

LOR

...

Design

Development

& In-Orbit Validation

Phase

Full

Deployment

Phase

slide14
Summary
  • GALILEO a joint EU / ESA initiative
    • Unanimous support from both ESA and EU councils
    • EC politically responsible, ESA technically responsible
  • Builds upon existing European experience in field of GNSS (EGNOS)
  • Designed from a civilian perspective
  • Independent from, but interoperable with other systems
    • GPS, GLONASS, EGNOS, UMTS etc.
  • Brings additional robustness for civil aviation
  • Further information can be found at the following Web sites

www.galileo-pgm.org

www.esa.int/navigation