2 Galileo Programme Galileo Overview Galileo is an autonomous navigation and positioning services under civilian control compatible/interoperable with GPS.A Technical, Economic and Political Challenge.Galileo infrastructure implemented in three phases:Development and In-Orbit Validation ( ) [under ESA control and budget]Deployment ( )Commercial Operations (from 2008)To complete the development phase a single management structure: The Galileo Joint Undertaking (founded by ESA and EC) for the Applications and the Local Element.
3 Galileo Services (1/2) (5 positioning services ) Galileo Overview Open service (OS): basic level dedicated to consumer applications and general-interest navigation.Safety of Life (SoL): a highly stringent service for use where passenger safety is critical.Commercial Service (CS): a restricted-access service for commercial and professional applications that require superior performance to generate value-added services.Public Regulated Service (PRS): a restricted service for governmental applications with high continuity characteristics.Search and Rescue Service (SAR): a humanitarian service to accurately pinpoint the location of distress messages from anywhere across the globe.
4 Galileo Services (2/2) (Simplified Galileo/SAR Architecture ) Galileo OverviewGalileo Services (2/2)(Simplified Galileo/SAR Architecture )Galileo Space segmentSARpayloadNavigation payload9GalileoGroundSegment21(406 MHz)(L1)8107ISSS(Intergovernmental SAR Satellite System)RLSP(Return Link service Provider)Distress Beacon&Galileo Receiver3, 4SAROperator
5 Components of Galileo Galileo Overview Global component (Galileo Core System):Space segment (30 satellites in MEO shared in 3 orbital planes).Ground control and Mission Segment.Regional component: providing an Optional Regional Integrity service. Regions will have the possibility to determine their own integrity information and broadcast it via the satellites.Local component: additional local signals providing additional performance in terms of accuracy, availability, continuity and integrity.
6 Signal in Space (1/3) Galileo Overview 10 Navigation signals emitted in RNSS bands:3 signals in the frequency range MHz (E6)4 signals in the frequency band MHz (E5a / E5b)3 signals in the frequency range MHz (E2L1E1)
7 Signal in Space (2/3) Galileo Overview Services allocation within Galileo signals:6 are designed for OS and SoL (signals 1,2,3,4 [E5a/E5b] and 9,10 [L1] )2 are designed specifically for CS (signals 6,7 [E6] )2 are designed specifically for PRS (signals 5 [E6] and 8 [L1] )
8 Signal in Space (3/3) ( Baseline signal ) Galileo Overview E5A E5b E6 Frequency BandE5AE5bE6L1 Centre FrequencyMHzMHzMHzMHzOccupied Bandwidth92.07 MHz40.92 MHz Sub SignalIQABCModulation ModeDataPilotBPSK (10)BOC(10,5)BPSK(5)(15, 2.5)BOC (1,1)Multiplexing ModeALTBOC (15,10)CASM Code rate (Mcps)10.235.1152.55751.023Primary Code Length10230Classified51158184Secondary Code Length201004-5025Received Power(dBW)-152 min / -149 maxSymbol rate / Data rateNone2501251000500
9 Development and Validation Phase: C/D/E1 Galileo OverviewDevelopment scheduleGalileo IOV2 to 5 SatellitesFull GalileoConstellation30 SatellitesExperimental GSTB-V22 Satellites200420052006200720082009- Qualification- SoL CertificationDevelopment and Validation Phase: C/D/E142 monthsT0