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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. GALILEO Overview High Level Architecture Consist of 30 (27+3) satellites and associated ground infrastructure

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International Civil Aviation Organization

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  1. International Civil Aviation Organization GALILEO CAR/SAM ATN/GNSS Seminar Varadero, Cuba, 6 to 9 May 2002 Presentation GNSS 4.3 by E. Chatre

  2. 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

  3. Space Segment • Constellation Configuration

  4. Signal Baseline • Open and Safety Of Life Signals

  5. Space Segment • Constellation Performance • Horiz accuracy around 4m (95%) • Vertical accuracy around 8m (95%)

  6. 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

  7. Ground Segment • Overview

  8. GALILEO Ground Control Stations for illustration only

  9. 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

  10. 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

  11. 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

  12. 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

  13. 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

  14. 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

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