GLONASS Status and Evolution - iainav.org · Total 28 S/Cs Operational (Glonass-M) 23 S/Cs ... 702...

UNCLASSIFIED

GLONASS Status and Evolution

IAIN World Congress 2015 20–23 October 2015, Prague, Czech Republic – Corinthia Hotel Prague

21.10.2015 1

Sergey REVNIVYKH ISS-RESHETNEV’s GLONASS Directorate

2 IAIN World Congress 2015 20–23 October 2015, Prague, Czech Republic – Corinthia Hotel Prague

State Policy

GLONASS is a core of the national Positioning,

Navigation, and Timing (PNT)

Government commitments to sustain and develop of

PNT infrastructure

GLONASS civil signals are open and free worldwide

GLONASS and GLONASS/GNSS equipment are to be

used in state/public applications

The Presidential Decree № 638 dated May 17, 2007

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

The GLONASS Federal Program is an instrument for National PNT Policy Implementation

3 IGNSS Symposium 2015 Outrigger Gold Coast, Australia. 14-16 July, 2015

GLONASS is compatible with other GNSS, interoperable at the user level, worldwide recognized and used

Results of the first Federal GLONASS Program 2002 - 2011

The GLONASS constellation is 100 % deployed – 2002 6-7 satellites are in mission operation

– 2012 24 satellites are in mission operation

Availability – 2002 18%

– 2012 100%

Accuracy is provided on a competitive level – 2006 35 m (1 sigma)

– 2012 2.8 m (1 sigma)

Glonass–K, a new generation of GLONASS family, is

under flight test now

GLONASS Constellation restoration

GLONASS accuracy improvement

Space segment evolution

Glonass 1982

Glonass-M 2003

Glonass-K Flight Test 2011

4 IGNSS Symposium 2015 Outrigger Gold Coast, Australia. 14-16 July, 2015

Goals of the Second Federal GLONASS Program

System performance improvement in terms of accuracy and

integrity

Provision of guaranteed positioning, navigation and timing

solutions under limited visibility, interference and jamming

conditions

Enhancement of current application efficiency and domains

The guaranteed provision of announced performances is the key indicator of program implementation quality

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GLONASS System Architecture

21.10.2015 5

GLONASS is the sophisticated system comprising interconnected components with harmonized operational characteristics

GLONASS

GLONASS

Space

Complex

Facilities for Earth orientation and

rotation parameters determination and

prediction

UTC(SU) generation and keeping

facilities

Wide-area Differential Correction

and Monitoring System

(SDCM-SBAS)

Global Precise Positioning System

Regional and local-area

augmentations

Application systems and equipment for civil users Application systems and equipment for special

users

Augmentation systems Supporting systems

User segment

Facilities for fundamental

astronomical and geodetic parameters

refinement

Facilities for Earth model and national

reference coordinate system provision

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GLONASS Space Complex Architecture

21.10.2015 6

Constellation

Rocket and space

complexes

Ground segment

Global one-way

measuring stations

network

Glonass-M

Glonass-K

Glonass-K2

Plesetsk RSC

• Soyuz-2 LV

• Fregat Booster

Ground Control

Segment

Synchronization and

Time Scale

generation facilities

Baikonur RSC

• Proton-M LV

• Breeze-M Booster

Svobodny RSC

• Angara LV

• Breeze-M Booster

Advanced

development

Advanced development

Advanced development

Space Complex is the core element of the GLONASS System

GLONASS Space Complex

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20

GLONASS Constellation Status

21.10.2015 7

I II III

1

4

5 13

12

11

9

23

24

714 +04

19

20

21

22

3

17

2

Status as of July 31, 2015.

Total 28 S/Cs

Operational (Glonass-M) 23 S/Cs

Maintenance (Glonass-M # 14) 1 S/C

Under flight test (Glonass-K1) 2 S/Cs

Under investigation (Glonass-M) 2 S/Cs

747 -04

730 +01

8

7

6 733 -04

745 +05

743 +06

744 +05

742 +06

734 +01

15

715 -07

716 +00

738 -01

736 -02

717 -07

723 +00

737 -01

721 -02

732 +03

735 +02

746

754 -03

720 +03

719 +02

725

731 -03

10

755 +04

14

21

18

16

17

20

9 702 +07

701 -05

20

Provides L1 and L2 FDMA open access service

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GLONASS Status Information

21.10.2015 8

www.glonass-iac.ru

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AVAILABILITY PERFORMANCE 20/10/2015

21.10.2015 9

Mean Global Availability = 99.9 % (averaged on the day time interval, PDOP ≤ 6, mask angle 5°)

Instant PDOP map (mask angle 5°)

The current configuration of GLONASS constellation enables continuous navigation worldwide.

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ACCURACY PERFORMANCE 20/10/2015

21.10.2015 10

1.5 m

1*10-14

GLONASS SIS user range error (RMS), m

Daily GLONASS satellites clock stability (Allan variation)

GLONASS meets all technical requirements for Glonass-M constellation

1*10-13

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Recent Events and Constellation Sustainment Plans

21.10.2015 11

• Glonass-M No.54 – March 24, 2014

• Glonass-М No.55 – June 14, 2014

• 1 Glonass-К1 satellite – December

1, 2014

• 2015-2016: up to 9 launches of

Glonass-M satellites (all are in

stock)

• The preferences to Soyuz or

Proton-M is given based on the

operational needs

Launch of Glonass-M No. 54

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Satellite Evolution

21.10.2015 12

Longer guaranteed lifetime

Modernization of S/C support systems

New CDMA signals

Improvement of on-board clock stability

Advanced technologies for monitoring and control, orbit and clock data provision (cross-link)

New satellites ensure GLONASS accuracy improvement and broaden application domain.

Glonass –K1

Capability for advanced payload flight tests

Extra functions

Glonass -K2

Glonass - M

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Launch Complex

21.10.2015 13

Group launch of GLONASS

satellites using:

Proton-M LV;

Angara-5 LV

Launch complex composition : Integrated launch vehicle (LV + Booster+ SC + Fairing)

Launch site

Technical facility

Ascending phase control facilities

Single launch using:

Soyuz-2 LV;

Angara-A5 LV

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Ground Segment of Space Complex

21.10.2015 14

Ground Segment

GLONASS Time generation and

keeping

Satellites clock synchronization

versus GLONASS Time

Prediction of GLONASS Time drift

versus the UTC (SU)

Prediction of UTC (SU) drift versus

Universal Time

Ground segment will ensure better performances of GLONASS System Space Complex for all

categories of users.

Satellite TT&C control

Orbit and Clock Data calculation

and upload

SIS quality control

Onboard Time Scale reference to

the Central Synchronizer TS

Ground Control Segment GLONASS Time Scale Generation

and Synchronization Facility

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GLONASS Ground Control Segment

21.10.2015 15

New GLONASS Ground Segment will

include: Extension of the monitoring station network

over the Russian territory

Deployment of monitoring station network in Antarctica

Extension of uplink station network throughout the Russian territory

Deployment of global monitoring station network outside the Russian territory

Further use of crosslink capabilities for Orbit and Clock data provision

Creation of high–stable Time Scale based on distributed system clocks synchronized versus the UTC (SU)

Regional GLONASS Segment

Antarctic GLONASS Segment

Equatorial GLONASS Segment

GLONASS Network Extension

Accuracy of GLONASS system Space Complex depends on well-coordinated operation and coherency of space and ground segment characteristics

UNCLASSIFIED


Way Forward for Performance Improvement

Modernization of the Ground Control Segment: Data processing SW update increasing the upload rate and of orbit and

clock data accuracy improvement

Use the radio ISL for orbit and clock data update rate increasing

Global monitoring station network deployment

Modernization of Space Segment: On-board SW update to use the radio ISL increasing the rate of orbit and

clock data upload

Intersignal, interfrequency and interchannel delays calibration

On-board clock stability improvement

New CDMA signals introduction

Flight test of new on-board clocks (new Rb, Cs and H clocks)

21.10.2015 16

The target is 0.3 m of SIS URE (one sigma)

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ISL capability for O&C data update

21.10.2015 17

Technical feasibility tested and confirmed for orbit and clock data update as 24 times per day

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New CDMA GLONASS Signals

L5OCM L3OC L2SC L2OC L1OCM L1SC L1OC

fc. MHz 1176.45 1202.025 1248.06 1575.42 1600.995

Max Bandwidth, MHz 20.5 15.4 4.1 15.4 4.1

The max power of

transmitter, dBW

16.0 20.0 21.6

Data Signal BPSK(10) BOC(5,2.5) BPSK (1) BOC(5,2.5) BPSK (1)

Pilot Signal BPSK(10) BOC(5,2.5) BOC (1,1) BOC(5,2.5) BOC (1,1)

21.10.2015 18

under study

The ICD documents are under development

“SF” – Secured FDMA Signal “OF” – Open FDMA Signal “SC” – Secured CDMA Signal “OC” – Open CDMA Signal

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New CDMA Signals Implementation Plan

S/V Type Glonass-M Glonass-K1 Glonass-K2

S/V # ≤ 54 55-61 11Л 12Л 15Л 16Л

17Л- -23Л

13Л, 14Л ≥24Л

S/V General View

Phased Array Antenna 1 Phase Center centered at the longitudinal –X axis, passing through the CoM

- -

L1OF

L1SF

L2OF

L2SF

L1OF

L1SF

L2OF

L2SF

L3OC

L1OF

L1SF

L2OF

L2SF

L3OC

L1OС

L1SС

L2OС

L2SС

L3OC

L1OС

L1SС

L2OС

L2SС

L3OC

L1OF

L1SF

L2OF

L2SF

Phased Array Antenna 2 Phase Center displaced of longitudinal –X axis

L1OF

L1SF

L2OF

L2SF

L1OF

L1SF

L2OF

L2SF

- - - L1OF

L1SF

L2OF

L2SF

-

Helical Antenna 3 Phase Center displaced of longitudinal –X axis

- L3OC L3OC - L2SC - -

21.10.2015 19

“SF” – Secured FDMA Signal “OF” – Open FDMA Signal “SC” – Secured CDMA Signal “OC” – Open CDMA Signal

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Glonass-M # 54

21.10.2015 20

APC

CM

L1 (OF, SF)

L2 (OF, SF)

Хс

CM

Zс

Yс

Yс

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Glonass-M ## 55 … 61

21.10.2015 21

APC

CM

L1 (OF, SF)

L2 (OF, SF)

Хс

CM

Zс

Yс

L3OC APC

Yс

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Satellites of current GLONASS constellation, transmitting L3OC

21.10.2015 22

Plane 3

Plane 1

17

24 23

18

19 20

21

22

Plane 2

15 16

9

10

11 12

13

14

8

7

6

5

4

3

2

1

Glonass-M

No. 755

(L3 separate nav.

antenna)

Glonass-K

No. 701

(L3 separate nav.

antenna)

Glonass-K

No. 702

(common L1, L2, L3

nav. antenna)

L3 phase center

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GLONASS L3 CDMA (1st phase)

21.10.2015 23

Signal modulation: BPSK (10)

Central frequency: 1202.025 MHz

Navigation message: fixed frame structure

Implemented: GLONASS-K #701 and #702

L3 CDMA signal spectrum

The navigation message superframe structure

http://digital.gpsworld.com/April2011#&pageSet=21

After flight test completion the navigation message will change to the flexible row structure with on-board SW upgrade

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GLONASS L3 CDMA (2nd phase) New Structure for GLONASS Nav Message

21.10.2015 24

L3 CDMA signal spectrum (no change)

The navigation message flexible row structure

http://digital.gpsworld.com/November2013#&pageSet=18

All new satellites will transmit L3 CDMA signal with the flexible row structure

Signal modulation: BPSK (10)

Central frequency: 1202.025 MHz

Navigation message: flexible row structure

Implemented: GLONASS-M #755

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Tentative Launch Program

21.10.2015 25

2015 2016 2017 2018 2019 2020 2021 I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV

Glonass-М (9 КА) Glonass-К2 (6+ КА)

52 53 51

56

57

58

59

60

61 K2

13

K2

14

K2

24

K2

25

K2

26

K2

27

Glonass-К1 (9 КА)

K1

15

K1

16

K1

17

K1

18

K1

19

K1

20

K1

21

K1

22

K1

23

9 Glonass-M satellites in stock

9 Glonass-K1 satellites are being contracted

Glonass-K2 satellites are in the development

Soyuz-2.1b with Fregat are available

Proton-M with DM-03 are available

The lift-offs will be implemented as necessary to keep the nominal constellation status (24 operational satellites)

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New Signals Implementation Forecast

21.10.2015 26

0 1 2 3 4 5 6 7 8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Glonass-M+ Glonass-K1 Glonass-K1+ Glonass-K2 Glonass-KM

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International Cooperation

21.10.2015 27

Tasks: – Set the rules at the world satellite navigation

market which are acceptable in the international

organizations for all GNSS

– Develop common standards

– Ensure GNSS compatibility and interoperability,

and protection of navigation RF spectrum

Objectives Integration GLONASS into the global navigation infrastructure in order to provide reliable

service for user benefit worldwide

Development of the GLONASS system to meet the increasing demands of all types of users providing GNSS compatibility and interoperability

Mechanism: Multilateral cooperation in the frame of the International Committee on GNSS

Bilateral cooperation regarding compatibility and interoperability issues with GNSS providers USA, EU,

India, China

Bilateral and multilateral cooperation for GLONASS use including CIS, BRICS

UNCLASSIFIED


End of Slides

Thank you for your attention!

21.10.2015 28

Sergey REVNIVYKH Deputy Director GLONASS Directorate ISS RESHETNEV Corporation office: +7 (495) 687-35-17 cell: +7 (916) 715-40-40 [email protected] [email protected]

GLONASS Status and Evolution - iainav.org · Total 28 S/Cs Operational (Glonass-M) 23 S/Cs ... 702...

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