GLONASS Government Policy,GLONASS Government Policy,Status and Modernization Status and Modernization

3rd China Satellite Navigation Conference15-18 May, 2012, Guangzhou, China

Tatiana Mirgorodskaya

Information and Analysis Center for Positioning, Navigation and Timing

Central Research Institute ofMachine Building

Russian Federal Space Agency

Basic Principles of State Policy Basic Principles of State Policy

Basic Documents:

• Presidential Decree, May 17, 2007

• GLONASS Federal Program

– 2002 – 2011

– 2012 – 2020 (adopted 3 March, 2012)

Basic Principles

• GLONASS is a dual use system

• GLONASS free of charge worldwide

• GLONASS mandatory use for Russian critical infrastructure and governmental applications

• Promotion of GLONASS commercial use

• GNSS compatibility and interoperability

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Presidential DecreePresidential Decree

• Access to GLONASS civil signals is free and unlimited for both Russian and international users

• Federal organizations, Federal subjects’ executive authorities, local self-governments and authorities, neglecting their organizational and legal status, shall use navigation equipment utilizing GLONASS signals

• Russian Federation Government shall approve and adopt the GLONASS Federal Program

The Presidential Decree № 638 of May, 17, 2007

“On Use of GLONASS Global Navigation Satellite System for the Benefit of Social and Economic Development of the

Russian Federation”

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GLONASS 2002-2011 Program Results GLONASS 2002-2011 Program Results

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Constellation recovery Accuracy improvement

Number of operational satellites

2.8 м

User positioning error, (RMS, SIS)

Federal Program forGLONASS Sustainment, Development and Use

for 2012-2020Program Goals:• Mass introduction of domestic navigation

technologies • Guaranteed provision of navigation services to

meet continuously growing requirements of all categories of users• for the national security purposes• for social and economic benefit• for pursuing leadership in satellite navigation

by means of • Sustaining • Further development of GLONASS

– improvement of performance ,

– broadening functional capabilities

– conditions and domains of usage

– balanced evolution of system’s components

Program Goals

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•Program Approved

• Budget for 9 years defined

•RFPs opened

Main GLONASS Program DirectionsMain GLONASS Program Directions

• Constellation sustainment (24 sats with spares)– Glonass-M launches up to 2014– Glonass-K launches since 2015– 24 satellites transmitting CDMA signals by 2020

• GLONASS improvement– Constellation (availability)– Accuracy of the core system– Augmentations development (accuracy, integrity, availability,

assisting technologies…)– References improvement (geodesy, time, Earth rotation and

attitude data…)• User segment development

– Governmental applications– Chips and chipsets, navigation maps– Encouraging commercial applications 6

GLONASS SegmentsGLONASS Segments

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GLONASS System ArchitectureGLONASS System Architecture

Proton-M Soyuz-2

Baikonur Plesetsk

Launch Vehicles

Orbital Constellation

Ground Control Segment

UsersUsers

Existing StationsPlanned Stations

Orbital Constellation:24 SVs + spares Orbit ParametersCircular, H = 19 100 km, i = 64.8°Period : 11h 15 min 8

Civil ApplicationsCivil Applications

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GLONASS Constellation Status GLONASS Constellation Status 04.05.201204.05.2012

GLONASS Performance GLONASS Performance (04.05.2012)(04.05.2012)

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Average availability for a day

99.5%(PDOP<6, >5)

Instant availability (PDOP map)

Instant SISRE, m

User position accuracy map (SIS)

AVAILABILITY ACCURACY

RMS 3.6 m

1.8 m

Recent EventsRecent Events

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Launches in 2011:

26.02.2011 the first GLONASS-K launch (flight testing)

03.10.2011 – 1 Glonass-M SV

04.11.2011 – 3 Glonass-M SV

28.11.2011 – 1 Glonass-M SV

Next launches:

2nd GLONASS-K (for in-orbit validation) Autumn 2012

26.02.2011

28.11.2011

04.11.2011

03.10.2011

19198282 2020111120032003 20142014

• 3 year design life• Clock stability -

5*10-13

• Signals: L1SF, L2SF, L1OF, (FDMA)

• Totally launched 81 satellites

• Real operational life time 4.5 years

• 7 year design life• Clock stability

1*10-13

• Signals: Glonass + L2OF (FDMA)

• Totally launched 28 satellites and going to launch 8 satellite by the end 2012

• 10 year design life• Unpressurized • Expected clock

stability ~10…5*10-

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• Signals: Glonass-M + L3OC (CDMA) – test

• SAR

• 10 year design life• Unpressurized • Expected clock stability

~5…1*10-14

• Signals: Glonass-M + L1OC, L3OC, L1SC, L2SC (CDMA)

• SAR

“Glonass” “Glonass-M” “Glonass-K1” “Glonass-K2”

GLONASS ModernizationGLONASS Modernization

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Directions of GLONASS Signal ModernizationDirections of GLONASS Signal Modernization

• Improved accuracy of phase and range measurements

• Better interference protection and robustness

• Interoperability with GPS, Galileo and other GNSS

New CDMA signals introduced on Glonass-K

Keeping on transmitting the existing FDMA signals

New CDMA signals introduced on Glonass-K

Keeping on transmitting the existing FDMA signals

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System of Differential Correction and System of Differential Correction and Monitoring (SDCM)Monitoring (SDCM)

Broadcasting facilities• 3 (+ 1) GEO sats

• Luch 5A launched 11 Dec. 2011• Luch 5B – Oct. 2012• Luch 5V – Mar. 2014

• SiSnet server

Reference stations network• 19 stations in Russia +up to 29 planned stations • 6-8 stations abroad +up to 53 planned stations

Central Processing Facilities• Master (Moscow)• Back-up (TBD)

Objectives• GNSS monitoring

integrity differential corrections orbit and clock data GNSS quality monitoring (GLONASS and

GPS)• Service area – Russian territory

Bellingshausen

Novolazarevskaya

Russkaya 2015

Progress

SummarySummary• GLONASS Program is among priorities of the Russian Government

policy• GLONASS open service is free for all users• First GLONASS Program completed, goal achieved by the end of

2011– Performance comparable with GPS by the end of 2011– Full constellation (24 sats) deployed by the end of 2011

• GLONASS will continue– Keep the GLONASS traditional frequency bands– Transmit existing FDMA signals – Introduce new CDMA signals

• New GLONASS Program (2012 – 2020) approved 3 March 2012– Government commitments for major performance characteristics– GLONASS sustainment, development, use

• International cooperation – to make GLONASS one of key elements of the international GNSS infrastructure for worldwide user benefits

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GLONASS Information ServiceGLONASS Information Service

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www.glonass-center.ru (www.glonass-iac.ru)

News GLONASS Status GLONASS Performance

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Thank you for your attention!

Тatiana MirgorodskayaCentral Research Institute of Machine Building

Information and Analysis Center for PNTTatyana.mirgorodskaya@glonass-iac.ru

www.glonass-iac.rutel/fax: + 7 495 5134139