FEDERAL SPACE AGENCY GLObalGLObal NavigationNavigation SatelliteSatellite SystemSystem (GLONASS)(GLONASS) Sergey Revnivykh Deputy Director General Central Research Institute of Machine Building Head of PNT Center 4-th meeting of International Committee on GNSS 13-18 September, 2009, St-Petersburg, The Russian Federation ContentContent System description Space segment Ground segment Signals Performance Timetable for system deployment. System Modernization Services provided and provision policies Perspective on compatibility and interoperability International cooperation 4th Meeting of International Committee on GNSS, 13 -18 September 2009, St. Petersburg, The Russian Federation 2 ContentContent System description Space segment Ground segment Signals Performance Timetable for system deployment. System Modernization Services provided and provision policies Perspective on compatibility and interoperability International cooperation 4th Meeting of International Committee on GNSS, 13 -18 September 2009, St. Petersburg, The Russian Federation 3 SystemSystem DescriptionDescription GLONASS Overview Orbit constellation: 24 satellites, 3 planes by 8 satellites Orbit shift by 120 °°° TT&C Monitoring along the equator and ULS Station Orbit parameters orbit – circular System Control Center height 19100 km inclination 64.8 °°° revolution 11h15min Two types of signal: Standard (open) Special (authorized) 4th Meeting of International Committee on GNSS, 13 -18 September 2009, St. Petersburg, The Russian Federation 4 SystemSystem Description.Description. SpaceSpace SegmentSegment Navigation satellite “Glonass -M” Main features • Guaranteed life time 7 years; • Mass 1415 kg; • Clock stability 1e-13; • Attitude control accuracy 0,5 deg; • Level of unpredictable aclrs 5e-11 m/c 2 • Navigations signals: 4 signals in L1 and L2 bands with FDMA Main features • Extended life time • Second civil signal L2 • Increased board clock stability • Improved attitude and the solar panel pointing accuracy • Improved dynamic model • Using Inter Satellite Link (ISL) measurements for improvement ephemeris and clock navigation data (test mode) 4th Meeting of International Committee on GNSS, 13 -18 September 2009, St. Petersburg, The Russian Federation 5 SystemSystem Description.Description. Ground Control Segment MS – monitoring and measuring SCC – system control center station TT&C – telemetry, tracking, CC – central clock commanding station SLR – laser tracking station ULS – upload station New stations after 2010 Operational stations 4th Meeting of International Committee on GNSS, 13 -18 September 2009, St. Petersburg, The Russian Federation 6 GLONASSGLONASS ImprovementImprovement EventsEvents In 2007-2008 12 GLONASS-M Блок 36. 26.10.2007 satellites launched 1st phase of Ground Control modernization Блок 37. 25. 12.2007 Refined geodesy reference implemented (PZ-90.02) 19 GLONASS-M Satellites in orbit (two civil signals in L1 и L2) Next launches: September 2009 – 3 “Glonass-M” sats November 2009 – 3 Блок 38. 25.09.2008 “Glonass-M” sats Блок 39. 25.12.2008 4th Meeting of International Committee on GNSS, 13 -18 September 2009, St. Petersburg, The Russian Federation 7 ExistingExisting GLONASSGLONASS FDMAFDMA SignalsSignals L2 L1 L1 open FDMA L2 open FDMA L1 authorized FDMA L2 authorized FDMA GLONASS will continue transmitting existing FDMA signals for the future 4th Meeting of International Committee on GNSS, 13 -18 September 2009, St. Petersburg, The Russian Federation 8 GLONASSGLONASS ConstellationConstellation StatusStatus (14.09.2009 ) GLONASSGLONASS ConstellationConstellation StatusStatus operational(08.11.2008 ) Latitude 726 14 701 715 22 135 °°° 6 comission 15 714 23 712 716 90 °°° 7 maintenance 713 24 729 16 45 °°° 8 decomission 718 17 722 9 0°°° 1 10 724 18 315 °°° 728 717 2 720 19 11 270 °°° 727 723 3 20 12 719 225 °°° 4 725 21 721 13 180 °°° 5 I plane II plane III plane 17 satellites operational 4th Meeting of International Committee on GNSS, 13 -18 September 2009, St. Petersburg, The Russian Federation 9 GLONASSGLONASS AvailabilityAvailability (14.09.2009, 0:27 a.m. ) Global availability is 87-95% (PDOP<6, γγγ>5 °°°) Mean availability for a day Instant availability 4th Meeting of International Committee on GNSS, 13 -18 September 2009, St. Petersburg, The Russian Federation 10 GLONASSGLONASS AccuracyAccuracy GLONASS accuracy has 5 time 20.02.2006 improved for last three years ∼∼∼25 m (1 sigma) Now it is the same order of GPS Next improvement phase is 20.02.2007 expected by 2011 ∼∼∼18 m (1 sigma) 20.02.2008 ∼∼∼15 m (1 sigma) 20.02.2009 ∼∼∼5-7 m (1 sigma) 4th Meeting of International Committee on GNSS, 13 -18 September 2009, St. Petersburg, The Russian Federation 11 ExtendedExtended PNTPNT ArchitectureArchitecture ofof RussiaRussia New GLONASS Technical Requirements Precise Wide Area Ephemeris and Clock Augmentation Regional System SDCM Augmntns GLONASS Space Complex Earth Attitude and Time Reference Rotation System System UTC (SU) Geodesy Reference and Maps Special User Civil Users Equipment Equipment Synergy of performance and requirements 4th Meeting of International Committee on GNSS, 13 -18 September 2009, St. Petersburg, The Russian Federation 12 GLONASSGLONASS StrategyStrategy PlanningPlanning Number of operational satellites Full constellation deployment in 2010 Ground Control Segment modernization New GLONASS-K satellite (with improved performance) IOV start by 2010 GLONASS will continue transmitting existing FDMA signals Additional new CDMA signals since GLONASS-K deployment GLONASS performance competitive ability provision plan GLONASS Federal Program extension until 2020 4th Meeting of International Committee on GNSS, 13 -18 September 2009, St. Petersburg, The Russian Federation 13 GLONASSGLONASS DeploymentDeployment ProgramProgram December, 2009 22 satellites. 99.7% global availability December, 2010 24 satellites. 99.99% global availability 4th Meeting of International Committee on GNSS, 13 -18 September 2009, St. Petersburg, The Russian Federation 14 TheThe directiondirection ofof GLONASSGLONASS navigationnavigation signalssignals modernizationmodernization • Provide better potential accuracy for pseudorange and phase measurements • Provide a better interference and multipath resistance of GLONASS signals • Provide of greater interoperability with GPS and future GALILEO and other GNSS Introduction of new CDMA signals since GLONASS-K deployment 4th Meeting of International Committee on GNSS, 13 -18 September 2009, St. Petersburg, The Russian Federation 15 SDCMSDCM GeneralGeneral ArchitectureArchitecture GPS GEO satellite satellites Differential and GLONASS Integrity data satellites Precise accuracy Standard accuracy Up-link Reference station Integrity monitoring stations Central processing facility network 4th Meeting of International Committee on GNSS, 13 -18 September 2009, St. Petersburg, The Russian Federation 16 SDCMSDCM ObjectivesObjectives GNSS Monitoring Integrity monitoring A posteriori detail analysis of system performance Differential corrections Service area – the Russian Federation 4th Meeting of International Committee on GNSS, 13 -18 September 2009, St. Petersburg, The Russian Federation 17 SDCMSDCM ReferenceReference StationsStations Reference stations (2008): 1. Moscow (Mendeleevo) First part of SDCM 2. Pulkovo reference stations network 3. Kislovodsk was put into the test 4. Norilsk operation in 2007 5. Irkutsk 6. Petropavlovsk- Kamchatka 7. Khabarovsk 8. Novosibirsk 9. Gelenzhik Reference stations (further development): 10. Tiksi 11. Bilibino 12. Magadan 13. Yuzhno-Sakhalinsk 14. Yakutsk 15. Vladivostok 16. Sverdlovsk 17. Lovozero 18. Voronezh 19. Pechery 4th Meeting of International Committee on GNSS, 13 -18 September 2009, St. Petersburg, The Russian Federation 18 SDCMSDCM SpaceSpace SegmentSegment Mass GEO «Luch – 5А» with L1 transponder 1000 kg Life-time 10 years Antenna pattern: Narrow Re-steering Omni directional Longitudes: Luch-5А: 16 °°° west Luch-5B: 95 °°° east 4th Meeting of International Committee on GNSS, 13 -18 September 2009, St. Petersburg, The Russian Federation 19 ContentContent System description Space segment Ground segment Signals Performance Timetable for system deployment. System Modernization Services provided and provision policies Perspective on compatibility and interoperability International cooperation 4th Meeting of International Committee on GNSS, 13 -18 September 2009, St. Petersburg, The Russian Federation 20 StateState PolicyPolicy BasicBasic PrinciplesPrinciples GLONASS is a part of the critical state PNT infrastructure providing national security and economy development Creating, developing and sustaining the PNT infrastructure is a State responsibility No direct user fees for civil GLONASS services Open, free access to GLONASS information necessary to develop and build user equipment GLONASS is used in combination with other GNSS, terrestrial radio navigation, other navigation means to increase reliability of navigation International cooperation on GNSS compatibility and interoperability Federal GLONASS Program is a basis for GLONASS sustainment, development and use 4th Meeting of International Committee on GNSS, 13 -18 September 2009, St. Petersburg, The Russian Federation 21 FederalFederal GLONASSGLONASS ProgramProgram 20022002 --20112011 Subprograms 1 Provide full constellation GLONASSGLONASS sustainment, sustainment, of 24 satellites by 2010 developmentdevelopment and and deployment deployment