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The [[COMPASS General Introduction|Compass Navigation Satellite System (CNSS)]], also named BeiDou-2,<ref name=Chinese_today>[http://www.sinodefence.com/space/satellite/compass-beidou2.asp Compass Satellite Navigation System (Beidou), on Sinodefence.com, updated on August 6th, 2011.] </ref> is China’s second-generation satellite navigation system that will be capable of providing positioning, navigation, and timing services to users on a continuous worldwide basis<ref name=Chinese_today/><ref name=COMPASS_Wiki>[http://en.wikipedia.org/wiki/Compass_navigation_system COMPASS Navigation system in Wikipedia]</ref>. Although the upgrade of its regional navigation system towards a global solution started in 1997, the formal approval by the Government of the development and deployment of BeiDou-2/CNSS was done in 2004.<ref name=Chinese_today/> The system is currently under development evolving from a regional system called [[Other Regional Systems|BeiDou-1]], and in the first phase will provide high-accuracy positioning services for users in China and its neighboring regions by 2012.<ref name=Chinese_today/> In a second stage, the system will evolve to provide global navigation services by 2020, similarly to the [[GPS General Introduction|GPS]], [[GLONASS General Introduction|GLONASS]] or [[GALILEO General Introduction|Galileo]] systems.<ref name=Chinese_today/>
The [[COMPASS General Introduction|Compass Navigation Satellite System (CNSS)]], also named BeiDou-2,<ref name=Chinese_today>[http://www.sinodefence.com/space/satellite/compass-beidou2.asp Compass Satellite Navigation System (Beidou), on Sinodefence.com, updated on August 6th, 2011.] </ref> is China’s second-generation satellite navigation system that will be capable of providing positioning, navigation, and timing services to users on a continuous worldwide basis<ref name=Chinese_today/><ref name=COMPASS_Wiki>[http://en.wikipedia.org/wiki/Compass_navigation_system COMPASS Navigation system in Wikipedia]</ref> and it is expected to reach full operational capability by 2020.


==COMPASS Future and Evolutions==


By December 2011, the COMPASS system went into operation on a trial basis providing initial passive positioning navigation and timing services for the whole Asia-Pacific region with a constellation of 10 satellites (5 GEO satellites and 5 IGSO satellites)<ref name="China Daily">[http://europe.chinadaily.com.cn/business/2011-12/28/content_14343656.htm Satellite navigation system launched], China Daily Europe, December 2011.</ref><ref>[[Wikipedia:Compass navigation system|Compass Navigation System in Wikipedia]]</ref>. During 2012, the system is going to launch another 6 satellites<ref name=BEIDOU_MUNICH_2011>China Satellite Navigation Office, ''Development of BeiDou Navigation Satellite System'', Munich Satellite Navigation Summit, 2011.</ref><ref name="China Daily" /><ref>[http://www.nasaspaceflight.com/2012/02/long-march-3c-launches-fifth-compass-g-satellite-orbit/ Long March 3C launches fifth Compass-G satellite into orbit, NASA Spaceflight]</ref><ref name=GPSWorld>[http://www.gpsworld.com/gnss-system/compass/news/beidou-2compass-g5-satellite-transitions-geo-12715?utm_source=GPS&utm_medium=email&utm_campaign=navigate_03_05_2012&utm_content=beidou-2compass-g5-satellite-transitions-geo-12715], GPS World: BeiDou-2/Compass G5 Satellite Transitions to GEO.</ref>.
==COMPASS Roadmap==


The COMPASS system is planned to be developed and deployed in three phases<ref>[http://www.beidou.gov.cn/2010/05/19/20100519101180c595f14a6d9938a42a2d796b56.html|Official BeiDou web site]</ref>:
* Phase 1 (2003+)
Phase 1 consists of an experimental regional navigation system, BeiDou-1, which provided active navigation service.
* Phase 2 (2012+)
BeiDou-2 consists of a reduced satellite constellation and provides open service over China. This phase aims at deploying a system with passive positioning and timing capability over a regional area.
* Phase 3 (2020+)
By 2020, COMPASS would reach full operational capability with a Walker constellation of 27 MEOs plus 5 GEOs and the existing 3 IGSOs satellites of the regional system<ref name=BEIDOU_MUNICH_2011/><ref name='Rome'>[http://www.filasinternational.eu/sidereus-project/pdf/02.pdf Jun Shen, ''COMPASS/Beidou-China’s GNSS'', BNStarNavigation Technology & System, Inc., Rome, June 11th, 2009]</ref>. COMPASS would provide global navigation services, similarly to the [[GPS General Introduction|GPS]], [[GLONASS General Introduction|GLONASS]] or [[GALILEO General Introduction|Galileo]] systems.<ref name=Chinese_today/>
By December 2011, the COMPASS system went into operation on a trial basis providing initial passive positioning navigation and timing services for the whole Asia-Pacific region with a constellation of 10 satellites (5 GEO satellites and 5 IGSO satellites)<ref name="China Daily">[http://europe.chinadaily.com.cn/business/2011-12/28/content_14343656.htm Satellite navigation system launched], China Daily Europe, December 2011.</ref><ref>[[Wikipedia:Compass navigation system|Compass Navigation System in Wikipedia]]</ref> and the Initial Operational Service was declared officially available.
During 2012, the system is going to launch another 6 satellites<ref name=BEIDOU_MUNICH_2011>China Satellite Navigation Office, ''Development of BeiDou Navigation Satellite System'', Munich Satellite Navigation Summit, 2011.</ref><ref name="China Daily" /><ref>[http://www.nasaspaceflight.com/2012/02/long-march-3c-launches-fifth-compass-g-satellite-orbit/ Long March 3C launches fifth Compass-G satellite into orbit, NASA Spaceflight]</ref><ref name=GPSWorld>[http://www.gpsworld.com/gnss-system/compass/news/beidou-2compass-g5-satellite-transitions-geo-12715?utm_source=GPS&utm_medium=email&utm_campaign=navigate_03_05_2012&utm_content=beidou-2compass-g5-satellite-transitions-geo-12715], GPS World: BeiDou-2/Compass G5 Satellite Transitions to GEO.</ref>.
==COMPASS Services==


The future COMPASS is expected to support two different kind of services: RDSS and RNSS.
The future COMPASS is expected to support two different kind of services: RDSS and RNSS.
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* Extended coverage
* Extended coverage


The Radio Navigation Satellite Service (RNSS) is very similar to that provided by GPS and Galileo and is designed to achieve similar performances. The global COMPASS system will be completed by 2020, with a Walker constellation of 27 MEOs plus 5 GEOs and the existing 3 IGSOs satellites of the regional system.<ref name=BEIDOU_MUNICH_2011/><ref name='Rome'>[http://www.filasinternational.eu/sidereus-project/pdf/02.pdf Jun Shen, ''COMPASS/Beidou-China’s GNSS'', BNStarNavigation Technology & System, Inc., Rome, June 11th, 2009]</ref>
The Radio Navigation Satellite Service (RNSS) is very similar to that provided by GPS and Galileo and is designed to achieve similar performances.
 
==International Collaboration==


The Chinese Government considers satellite navigation as strategic in the new generation information technology, and encourages international cooperation to ensure compatibility and interoperability with other navigation systems.<ref name=BEIDOU_MUNICH_2011/>
The Chinese Government considers satellite navigation as strategic in the new generation information technology, and encourages international cooperation to ensure compatibility and interoperability with other navigation systems.<ref name=BEIDOU_MUNICH_2011/>


==Notes==
==Notes==

Revision as of 13:43, 21 June 2012


COMPASSCOMPASS
Title BeiDou Future and Evolutions
Edited by GMV
Level Basic
Year of Publication 2011

The Compass Navigation Satellite System (CNSS), also named BeiDou-2,[1] is China’s second-generation satellite navigation system that will be capable of providing positioning, navigation, and timing services to users on a continuous worldwide basis[1][2] and it is expected to reach full operational capability by 2020.


COMPASS Roadmap

The COMPASS system is planned to be developed and deployed in three phases[3]:

  • Phase 1 (2003+)

Phase 1 consists of an experimental regional navigation system, BeiDou-1, which provided active navigation service.

  • Phase 2 (2012+)

BeiDou-2 consists of a reduced satellite constellation and provides open service over China. This phase aims at deploying a system with passive positioning and timing capability over a regional area.

  • Phase 3 (2020+)

By 2020, COMPASS would reach full operational capability with a Walker constellation of 27 MEOs plus 5 GEOs and the existing 3 IGSOs satellites of the regional system[4][5]. COMPASS would provide global navigation services, similarly to the GPS, GLONASS or Galileo systems.[1]


By December 2011, the COMPASS system went into operation on a trial basis providing initial passive positioning navigation and timing services for the whole Asia-Pacific region with a constellation of 10 satellites (5 GEO satellites and 5 IGSO satellites)[6][7] and the Initial Operational Service was declared officially available.

During 2012, the system is going to launch another 6 satellites[4][6][8][9].


COMPASS Services

The future COMPASS is expected to support two different kind of services: RDSS and RNSS.

In the Radio Determination Satellite Service (RDSS) , the user position is computed by a ground station using the round trip time of signals exchanged via GEO satellite. The RDSS Long term feature further includes[10]:

  • Short message communication (guaranteeing backward compatibility with BeiDou-1)
  • Large volume message communication
  • Information connection
  • Extended coverage

The Radio Navigation Satellite Service (RNSS) is very similar to that provided by GPS and Galileo and is designed to achieve similar performances.

International Collaboration

The Chinese Government considers satellite navigation as strategic in the new generation information technology, and encourages international cooperation to ensure compatibility and interoperability with other navigation systems.[4]


Notes

References

  1. ^ a b c Compass Satellite Navigation System (Beidou), on Sinodefence.com, updated on August 6th, 2011.
  2. ^ COMPASS Navigation system in Wikipedia
  3. ^ BeiDou web site
  4. ^ a b c China Satellite Navigation Office, Development of BeiDou Navigation Satellite System, Munich Satellite Navigation Summit, 2011.
  5. ^ Jun Shen, COMPASS/Beidou-China’s GNSS, BNStarNavigation Technology & System, Inc., Rome, June 11th, 2009
  6. ^ a b Satellite navigation system launched, China Daily Europe, December 2011.
  7. ^ Compass Navigation System in Wikipedia
  8. ^ Long March 3C launches fifth Compass-G satellite into orbit, NASA Spaceflight
  9. ^ [1], GPS World: BeiDou-2/Compass G5 Satellite Transitions to GEO.
  10. ^ "Preliminary Results of GPS/Compass Integrated Positioning and Navigation", presented in the COMPASS Workshop held during the ION GNSS 2011 Conference.
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