Federal Space Agency GLONASS: Current status and perspectives 3rd ALLSAT Open conference Hannover, June 22, 2006 Vyacheslav DVORKIN, Sergey KARUTIN Russian Institute of Space Device Engineering 53, Aviamotornaya str, Moscow 111250 Russia sergey.karutin@rniikp.ru www.rniikp.ru
Content State Policy principles GLONASS current status GLONASS modernization plans GLONASS augmentations
State policy principles No direct user fees exist for the GLONASS service Open access is guaranteed to the GLONASS signal structure for user equipment and applications development Application of combined GLONASS/GPS receivers is promoted within Russian territory Compatibility and interoperability of GLONASS with GPS and future GALILEO has to be maintained GLONASS involvement in the GNSS global markets is a target
State policy juristic fundamentals President Resolution, 1999 Government Resolution, 1999 Federal Program «Global Navigation System» (GLONASS program),, 2001 Concept of Russian Federation united position navigation and time system, 2004 GLONASS is a basement of united position navigation and time service
Basic topics of federal GLONASS program GLONASS system maintenance and development Minimum constellation size (18 satellites) 2007 Full constellation (24 satellites) 2009 Development and production of the GNSS user equipment for all applications Combined GNSS receivers Integrated systems based on GNSS technology Receiver components creation Navigation technology integration into transport infrastructure Geodetic reference frames modernization Federal GLONASS Programme is is directly funded from from the the Federal Budget with with annual corrections
Content State Policy principles GLONASS current status GLONASS modernization plans GLONASS augmentations
15 15 satellites on on orbit Constellation status 11 SV «GLONASS» (3 yrs life-time): 4 SV «GLONASS-M» (7 yrs life-time time) 2 operational 2 undergo flight test Blok 35 2006 GLONASS-M 15 LT 7yrs GLONASS-M 16 LT 7 yrs GLONASS-M 17 LT 7yrs 5 GLONASS 96 26.12.04 LT 3 yrs GLONASS 95 10.12.03 LT 3 yrs GLONASS 89 01.12.01 LT 3 yrs GLONASS 94 10.12.03 LT 3 yrs GLONASS-M 11Л 10.12.03 LT 7 yrs GLONASS-M 12Л 26.12.04 LT 7 yrs GLONASS 97 26.12.04 LT 3 yrs 9 10 11 12 13 14 15 16 Flight test GLONASS 87 13.10.00 LT 3 yrs GLONASS 83 13.10.00 LT 3 yrs GLONASS 98 25.12.05 LT 3 yrs GLONASS 92 25.12.02 LT 3 yrs GLONASS 91 25.12.02 LT 3 yrs GLONASS 93 25.12.02 LT 3 yrs GLONASS-M 13L 25.12.05 LT 7 yrs GLONASS-M 14L 25.12.05 LT 7 yrs
Constellation history and perspectives GLONASS deployment milestones: 18 satellites in constellation 2007 24 satellites in constellation 2009
Content State Policy principles GLONASS current status GLONASS modernization plans GLONASS augmentations
GLONASS modernization plans Modernization of on-board major components, including payload Navigation signals modernization Upgrade GLONASS ground segment
Satellite equipment modernization plans New signals additional transmitters development Intersatellite link creation Navigation message self-descriptiveness increasing
Navigation signals
GLONASS signals modernization 10.22 MHz GPS L1 BPSK 5.11/0.511 MHz 1598.0625 1607.0625 MHz F = 0.5625 MHz 1.022 MHz -7-6 +9 1610.6 MHz R/A 1583 1585 1587 GPS L2 1589 1593 1591 1595 1597 1599 1601 1603 1605 1607 1609 1611 1613 BPSK 5.11/0.511 MHz 1242.9375 1249.9375 MHz F = 0.4375 MHz L2f(i) = 7/9 L1f(i) F 1.022 MHz -7-6 +9 10.22 MHz E4 GALILEO 1228 1230 1232 L3 GPS/GALILEO E5A 1234 1238 1236 1240 1242 1244 1246 1248 1250 1252 1254 1256 1258 BPSK 4.095 MHz 1201.743-1208.511 MHz F = 0.423 MHz L3f(i) = 94/125 L1f(i) F -7 +9 E5B GALILEO 1186 1188 1190 1192 1196 1194 1198 1200 1202 1204 1206 1208 1210 1212 1214 1216 8.19 MHz 1207.14 MHz GLONASS GLONASS-M GLONASS-K
GLONASS control segment modernization Modernization program One-way measurement and ephemeris computation stations network development One-way measurement stations network creation Two-way way measurement stations deployment Communication channels modernization
Navigation accuracy 2007 2008 2009 2010 2011 Ephemeris and clock accuracy (σ)( along track, м 5 3,5 1,5 1,2 1 cross track, м 5 3,5 1 0,8 0,5 radius, м 1 0,5 0.3 0,25 0,25 synchronization, ns 6 4 3 2 2 Positioning accuracy (σ)( horizontal, m 3 3 3 2 1.5 vertical, m 7 5 5 4 2 25 Positioning error (3σ), m 20 15 10 5 0 2007 2008 2009 2010 2011
Content State Policy principles GLONASS current status GLONASS modernization plans GLONASS augmentations
GLONASS augmentations Russian wide-area differential subsystem GLONASS/GPS integrity monitoring subsystem Regional differential subsystems
Russian system for differential correction and monitoring (SDCM) SDCM goals Based on GLONASS/GPS signals: 1) Provide «meter level» of position determination accuracy in real time horizontal: : 1.0-1.5 m vertical: : 2.0-3.0 m 2) Provide «centimeter level» of position determination in real time (with ground stations support) horizontal: : 1-2 cm по vertical: : 4 6 cm 3) Making operative integrity monitoring 4) Making a posteriori integrity monitoring
SDCM architecture GLONASS SV. 2. 4. 6. 1 Processing Center GEO. 3 Data gathering points located abroad. 8. 5 Upload station. 7 Data gathering points in Russia (as of 2006): 1 Moscow; 2 Pulkovo (S.Petersburg); 3 Kislovodsk; 4 Norilsk; 5 Irkutsk; 6 Petropavlovsk; 7 Khabarovsk; 8 Novosibirsk
SDCM development plans Data gathering network development 2007-2008 Satellite transponder design and manufacturing 2008 Ground uplink station creation 2008 System flight test 2009-2010 2010
Data collection network development program. 2. 4 9 11. 6 19. 1 17 16 15 13. 3 18. 8. 5 12. 14 Existing station (end 2005 ): 1 Moscow; 2 Pulkovo (S.Petersburg); 3 Kislovodsk; 4 Norilsk; 5 Irkutsk; 6 Petropavlovsk; 7 Khabarovsk; 8 Novosibirsk Data gathering point (future): 9 Tiksi; 10 Bilibino; 11 Magadan; 12 Yugno-Sahalinsk; 13 Yakutsk; 14 Vladivostok; 15- Ekaterinburg; 16- Lovozero; 17 Voroneg; 18 Anapa; 19 Pecheri.
Federal Space Agency Thank you for attention!
GLONASS modernization plans Retrofitting ground segment Modernization of the GLONASS time keeping system Improving ground measurement processing techniques to achieve better ephemeris and clock accuracy based on combination of one-way and two-way way measurement Improving stability of onboard satellite clock Improving Geodetic Reference Frame PZ-90 to agree it with ITRF Introduction of the third civil signal in L3 starting with GLONASS-K K in 2008 Providing GLONASS with Search and Rescue capability (starting with GLONASS-K) in a way similar to COSPAS-SARSAT SARSAT
Basic Improvements in GLONASS-M M Compared with GLONASS Spacecraft (Details: GLONASS Interface Control Document (ICD), version 5, 20022 ) L2 signal is modulated with civil code Better onboard frequency standard (1 10 vs. 3 10-13 ) 10-13 Extra parameters are added into navigation message: Accuracy factor (URA analog), temporarily set to not monitored B1,B2 coefficients for calculating UT1 KP sing of coming leap second N4 sequential number of 4-year 4 interval starting with 1996 N T day sequential number within 4-year 4 interval τ n onboard L1/L2 signal delay difference τ GPS GPS/GLONASS time offset τ GPS