1. GALILEO INTERIM SUPPORT STRUCTURE EUROPEAN COMMISSION 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 INTERIM SUPPORT STRUCTURE EUROPEAN COMMISSION 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. GALILEO INTERIM SUPPORT STRUCTURE EUROPEAN COMMISSION Space Segment Constellation Configuration

4. GALILEO INTERIM SUPPORT STRUCTURE EUROPEAN COMMISSION Signal Baseline Open and Safety Of Life Signals SignalFrequencyChip RateData Rate 1117610MHz50 2120710MHz250 315752MHz200

5. GALILEO INTERIM SUPPORT STRUCTURE EUROPEAN COMMISSION Space Segment Constellation Performance Horiz accuracy around 4m (95%) Vertical accuracy around 8m (95%)

6. GALILEO INTERIM SUPPORT STRUCTURE EUROPEAN COMMISSION Space Segment Satellite Payload GALILEO GALILEO In Flight Configuration Overall Spacecraft: 650 Kg / 1.5 kW class Launcher Options: Ariane, Proton, Soyuz, …... Navigation payload: 70-80 Kg / 850 W Search and Rescue (SAR) transponder: ca. 20 kg

7. GALILEO INTERIM SUPPORT STRUCTURE EUROPEAN COMMISSION Ground Segment Overview

8. GALILEO INTERIM SUPPORT STRUCTURE EUROPEAN COMMISSION G ALILEO Ground Control Stations for illustration only

9. GALILEO INTERIM SUPPORT STRUCTURE EUROPEAN COMMISSION System Boundaries

10. GALILEO INTERIM SUPPORT STRUCTURE EUROPEAN COMMISSION 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. GALILEO INTERIM SUPPORT STRUCTURE EUROPEAN COMMISSION 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 INTERIM SUPPORT STRUCTURE EUROPEAN COMMISSION GALILEO Schedule 4 Phases –Definition Phase Up to 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. GALILEO INTERIM SUPPORT STRUCTURE EUROPEAN COMMISSION GALILEO Schedule 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 …. Definition Phase Design Development & In-Orbit Validation Phase Full Deployment Phase... DEF DDV LOR Initial Galileo Full Galileo Operational Galileo 1.250 B€ 2.150 B € 220 M€ p.a. 80 M€

14. GALILEO INTERIM SUPPORT STRUCTURE EUROPEAN COMMISSION 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