glonass space segment

GLONASS GLONASS space segmentspace segment

STATUS STATUS & & MODERNIZATIONMODERNIZATION

Joint - Stock Company «Academician M.F. Reshetnev» Information Satellite Systems»

ICG‐7, November 04‐09, 2012 , Beijing, China

2

+01

№ 722

+01

Plane III№ 724

№ 735 № 732№ 714

№ 725

-03 +04

‐03

+03+02

Plane I

№ 728

№ 733

-04

+05

№ 727

№ 729

+03

№ 720

№ 717‐07

№ 715

№ 716

‐07

00

№ 746

+04

№ 719

+02

№ 736

№ 723

№ 721

‐02

00

№ 730

№ 734

№ 731

№ 726

№ 737

-02

‐01

‐01

№ 742

№ 745

№ 743 № 744

+06

+05

-04

17

2423

17

19 20

21

22

№ 701F

Plane II

1516

9

10

1112

13

14

№ 738

8

7

6

5

4

3

2

1

24 SV Nominal operationNominal operation

Spare ( №№ 714, 722, 743)Spare ( №№ 714, 722, 743)3 SV In maintenance (№№ 726, 727, 729) In maintenance (№№ 726, 727, 729) 3 SV

Flight tests («Glonass-K», № 701)Flight tests («Glonass-K», № 701)1 SV

Orbital constellation statusOrbital constellation status04.104.111.2012.2012

№ 712

+06

Constellation maintenanceConstellation maintenance

3

Launches in 2011

26.02.2011 the first «Glonass-K»

03.10.2011 – 1 SV «Glonass-M»

04.11.2011 – 3 SV’s «Glonass-M»

28.11.2011 – 1 SV «Glonass-M»

Ground store:

1 SV «Glonass-К» (№ 702F)

3 SV’s «Glonass-M» (№ 747, № 748, № 749)

26.02.2011

28.11.2011

04.11.2011

03.10.2011

«Glonass» «Glonass-M» «Glonass-K» «Glonass-K2»

GLONASS ModernizationGLONASS Modernization

4

UNDER DEVELOPMENT

UNDERFLIGHT TESTS

UNDER NOMINAL

OPERATION

HAVE BEENDECOMMISSIONED

first launch first launch first launch planned launch

19198282 2020111120032003 20120155

««GlonassGlonass‐‐MM»»MAIN FEATURES & MODERNIZATIONMAIN FEATURES & MODERNIZATION

5

MAIN FEATURES- 3 Cs clocks- Ni-H Batteries- Silicon solar cells- 7 years design life- Single / Triple launch capabilities- Nav. signals transmission

in frequency bands L1&L2- Space Laser Ranging - advanced technology

demonstration capabilities

PRE - MODERNIZATION- L1OF; L1SF; L2OF; L2SF

POST MODERNIZATION- L1OF; L1SF; L2OF; L2SF,

L3OC (planned from 2014)

6

PRE – MODERNIZATION (701F)- Nav. antenna (L1OF, L1SF, L2OF; L2SF)- Nav. antenna (L3OC)- Solar array

(single-junction GaAs solar cells)

POST MODERNIZATION (702F)- Improved nav. antenna (L1OF; L1SF; L2OF; L2SF, L3OC)

- Solar array (triple-junction GaAs solar cells)

««GlonassGlonass‐‐KK»»FEATURES & IMPROVEMENTSFEATURES & IMPROVEMENTS

MAIN FEATURES- 2 Cs + 2 Rb clocks- Ni-H Batteries- single-junction Ga-As solar cells- 10 years design life- Single / triple launch capabilities- Nav. signals transmission

in L1&L2&L3 frequency bands - Space Laser Ranging- Search & Rescue (COSPAS-SARSAT)

««GlonassGlonass‐‐K2K2»»FEATURES & IMPROVEMENTSFEATURES & IMPROVEMENTS

7

Predicted improvements- improved nav. antenna

L1&L2&L3

MAIN FEATURES- 2 Cs + 2 Rb clocks- Lithium-Ion batteries- triple-junction GaAs solar cells- 10 years design life- Single / Triple launch capabilities- Nav. signals transmission

in L1&L2&L3 frequency bands - Space Laser Ranging- Search & Rescue (COSPAS-SARSAT)- Space Environment Detection System- advanced technology

demonstration capabilities incl.advanced clocks

GLONASS navigation signals modernization

SatelliteFDMA signals CDMA signals

L1 L2 L1 L2 L3

«Glonass-M» L1OFL1SF

L2OFL2SF - -

L3OC(from 2014)

«Glonass-K» L1OFL1SF

L2OFL2SF - - L3OC

«Glonass-K2» L1OFL1SF

L2OFL2SF

L1OCL1SC

L2OCL2SC

L3OCL3OC

9

SUMMARYSUMMARY

• Currently GLONASS system provides worldwide service• Open signals are provided to users in three frequency bands

L1&L2&L3.

10

The main indexes of The main indexes of space complex modernization space complex modernization 

in frames of new GLONASS Program 2012in frames of new GLONASS Program 2012‐‐20202020

- Navigation signals (FDMA&CDMA) are transmitted in three frequency bands(L1OF, L1SF, L2OF, L2SF, L1OC, L1SC, L2OC, L2SC, L3OC)

- constellation includes 30 satellites - 100 % availability is provided at the open territory- 0,6 m user position accuracy

provided real time using only space complex service

11

Thank you for your attention!

JSC «Information Satellite System - Reshetnev Company»RF, 662972, Zheleznogorsk, Krasnoyarsk region,Lenin str.,52.

tel: +7-(391-97)-2-80-08,fax: +7-(391-97) 5-61-46;Dr. V. Kossenko, Dr. A. Crechkoseev, Mr. R. Fatkulin

kosenko@iss-reshetnev.ru, ak_grechkoseev@mail.ru, frf@iss-reshetnev.ruwww.iss-reshetnev.ru