Galileo OS SIS ICD (797928), страница 4
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56Table 37: I/NAV nominal page with bits allocation ................................................................ 57Table 38: I/NAV alert page with bits allocation ...................................................................... 57Table 39: I/Nav nominal sub-frame structure .......................................................................... 58Table 40: I/NAV sub-frame sequencing .................................................................................. 60Table 41: Bits allocation for word type 1.................................................................................
60Table 42: Bits allocation for word type 2................................................................................. 60Table 43: Bits allocation for word type 3................................................................................. 60Table 44: Bits allocation for word type 4................................................................................. 61Table 45: Bits allocation for word type 5................................................................................. 61Table 46: Bits allocation for word type 6.................................................................................
61Table 47: Bits allocation for word type 7................................................................................. 62Table 48: Bits allocation for word type 8................................................................................. 62Table 49: Bits allocation for word type 9................................................................................. 62Table 50: Bits allocation for word type 10............................................................................... 63Table 51: I/NAV dummy message with bits allocation ...........................................................
63Table 52: Dummy word with bits allocation............................................................................ 64Table 53: Ephemeris parameters .............................................................................................. 66Table 54: GST parameters........................................................................................................ 68Table 55: Galileo clock correction parameters ........................................................................ 68Table 56: Galileo clock correction data within F-NAV navigation message .......................... 69Table 57: BGD parameters.......................................................................................................
69Table 58: BGD values mapping on messages and services ..................................................... 70Table 59: Ionospheric correction parameters ........................................................................... 71Table 60: Parameters for the GST - UTC conversion.............................................................. 73Table 61: Parameters for the GPS time conversion .................................................................
74Table 62: Satellite ID ............................................................................................................... 74Table 63: IOD values mapping on data type............................................................................ 75Table 64: Data validity satellite status (transmitted on E5a) ................................................... 75Table 65: Data validity satellite status (transmitted on E5b and E1-B) ................................... 76Table 66: Data validity status bit values ..................................................................................
76Table 67: Signal health status for E5a (transmitted on E5a).................................................... 76Table 68: Signal health status bit values .................................................................................. 76Table 69: Almanac parameters................................................................................................. 78Table 70: Primary code-length and hexadecimal representation characteristics for the differentGalileo signal components................................................................................................. 80146H329H147H30H148H31H149H32H150H3H15H34H152H35H153H36H154H37H15H38H156H39H157H340H158H341H159H342H160H34H16H34H162H345H163H346H164H347H165H348H16H349H167H350H168H351H169H352H170H35H17H354H172H35H173H356H174H357H175H358H176H359H17H360H178H361H179H362H180H36H©, 2006, European Space Agency / Galileo Joint UndertakingDocument subject to terms of use and disclaimers p. 2-4.Reference:Issue:Revision:Date:GAL OS SIS ICD/D.0Draft023/05/2006Page121.
SCOPEThe present Galileo Signal In Space Interface Control Document (SIS ICD)Draft 0 contains the publicly available information on the Galileo Signal InSpace.The present document is subject to evolution, and the informationcontained in it may change.It is recommended that a reconfigurable approach for the Galileo receivers beadopted by the manufacturers, in order to easily adapt the receivers' architectureto the possible changes which might occur in the future.©, 2006, European Space Agency / Galileo Joint UndertakingDocument subject to terms of use and disclaimers p. 2-4.Reference:Issue:Revision:Date:GAL OS SIS ICD/D.0Draft023/05/2006Page132. INTRODUCTIONGalileo is the European global navigation satellite system, providing a highly accurate,guaranteed global positioning service under civilian control.
It is inter-operable with GPS andGLONASS, the two other global satellite navigation systems.The fully deployed Galileo system consists of 30 satellites (27 operational + 3 spares),positioned in three circular Medium Earth Orbit (MEO) planes at a nominal average orbitsemi-major axis of 29601.297 Km, and at an inclination of the orbital planes of 56 degreeswith reference to the equatorial plane. Once this is achieved, the Galileo navigation signalsprovide a good coverage even at latitudes up to 75 degrees north and 75 degrees south.Galileo provides enhanced distress localisation and call features for the provision of a Searchand Rescue service interoperable with the COSPAS-SARSAT system.This Galileo Signal-In-Space Interface Control Document is intended for use by the Galileouser community. It specifies the interface between the Galileo Space Segment, and the GalileoUser Segment.Figure 1 specifies the RF air interface between the space and user segment.
Threeindependently usable signals are permanently transmitted by all Galileo satellites: E5, E6 andE1. The E5 link is further sub-divided into two RF links denoted E5a and E5b.364HGALILEO SPACE SEGMENT (SS)GALILEO SPACEVEHICLE (SV)E5E5aE6E5bE6E1E1GALILEO USERSEGMENT (US)Figure 1: Space Vehicle / Navigation User InterfaceThis document describes the signals related to the open service of Galileo with the intention tofoster its standardization for mass-market development.©, 2006, European Space Agency / Galileo Joint UndertakingDocument subject to terms of use and disclaimers p. 2-4.Reference:Issue:Revision:Date:GAL OS SIS ICD/D.0Draft023/05/2006Page143. LIST OF ACRONYMSAltBOCAltBOC(n,m)ARNSBGDBOCBOC(n,m)BOCcbpsBPSKBPSK(m)CCFCDMACLCoMCoPCOSPASSARSATCRCCSDMEECEIRPESAFECGGTOGJUGMSGPSGSSGSTHPAIICDIDConstant envelope modulation scheme for combining two sidebands eachconsisting itself of two binary signals (in I- and Q-channel).AltBOC with chipping rate m*1.023 Mcps and a sub-carrier frequency ofn*1.023 MHz.Aeronautical Radio Navigation ServicesBroadcast Group DelayBinary Offset Coding with sine shaped subcarrier (see Definitions)Binary Offset Carrier signal with chipping rate of m*1.023 Mcps and asub-carrier frequency of n*1.023 MHzBinary Offset Coding with cosine shaped subcarrier (see Definitions)Bits per secondBinary Phase Shift KeyingBinary Phase Shift Keying with chipping rate of m*1.023 McpsCross-Correlation FunctionCode Division Multiple AccessCorrelation LossCentre of MassCentre of PhaseCosmicheskaya Systyema Poiska Avariynich Sudov - Search and RescueSatellite Aided TrackingCyclic Redundancy CheckCommercial ServiceDistance Measurement EquipmentEuropean CommissionEquivalent Isotropic Radiated PowerEuropean Space AgencyForward Error CorrectionGalileo/GPS Time OffsetGalileo Joint UndertakingGround Mission SegmentGlobal Positioning SystemGround Sensor StationGalileo System TimeHigh Power AmplifierIn-Phase ComponentInterface Control DocumentIdentification©, 2006, European Space Agency / Galileo Joint UndertakingDocument subject to terms of use and disclaimers p.
2-4.IFIODITUJTIDSLANLFSRLSBMcpsMHzMIDSMSBMSSN/ANIBNPODTSOSPRNQQPSK(m)RFRHCPRLMRNSSRXSARSISSISASISESNFSoLSpsSSSVSVIDTACANTBCReference:Issue:Revision:Date:GAL OS SIS ICD/D.0Draft023/05/2006Page15Integrity FlagIssue Of DataInternational Telecommunication UnionJoint Tactical Information Distribution SystemLongitude of the Ascending NodeLinear Feedback Shift RegisterLeast Significant BitMega chips per secondMegahertzMultifunctional Information Distribution SystemMost Significant BitMobile Satellite ServiceNot ApplicableNon Interference BasisNon-PeriodicOrbit Determination and Time SynchronisationOpen ServicePseudo-Random NoiseQuadrature ComponentQuadrature Phase Shift Keying with chipping rate of m*1.023 McpsRadio FrequencyRight-Hand Circular PolarizationReturn Link MessageRadio Navigation Satellite SystemReceiverSearch-and-Rescue Service/SignalSignal-In-SpaceSignal In Space AccuracySignal In Space ErrorSatellite Navigation FrameSafety-of-Life ServiceSymbols per secondSpace SegmentSpace VehicleSpace Vehicle IDentificatorTactical Air NavigationTo Be Confirmed©, 2006, European Space Agency / Galileo Joint UndertakingDocument subject to terms of use and disclaimers p.
2-4.TBDTOCTOTTOWTTFULSUMRPUSUTCWNReference:Issue:Revision:Date:GAL OS SIS ICD/D.0Draft023/05/2006Page16To Be DecidedTime Of ComputationTime Of TransmissionTime Of WeekTime To FixUp-Link StationUser Minimum Received PowerUser SegmentUniversal Time CoordinatedWeek Number©, 2006, European Space Agency / Galileo Joint UndertakingDocument subject to terms of use and disclaimers p. 2-4.Reference:Issue:Revision:Date:GAL OS SIS ICD/D.0Draft023/05/2006Page174. DEFINITIONS AND NOMENCLATURE IN THIS DOCUMENTE5-SignalThe Galileo E5-signal consists of the signals E5a, E5b (and modulationproduct signals) and is transmitted in the frequency band 1164 – 1215MHz allocated to RNSS with a worldwide co-primary status.
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