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BeiDou Performances: Difference between revisions
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==COMPASS Performances== | ==COMPASS Performances== | ||
In May 2003, the successful launch of BeiDou-1C also meant the establishment of the BeiDou-1 navigation system. On November 2, 2006, China announced that from 2008 BeiDou would offer an open service with an accuracy of 10 meters, timing of 0.2 nanoseconds, speed of 0.2 meter/second. It followed that in February 2007, the fourth and also the last satellite of BeiDou-1 system, the BeiDou-1D was | In May 2003, the successful launch of BeiDou-1C also meant the establishment of the BeiDou-1 navigation system, providing navigation, communication and timing services for the greater China area. The system services and performance characteristics at this time (2003) were: <ref>[http://www.filasinternational.eu/sidereus-project/pdf/02.pdf Compass/BeiuDou status presentation] in Rome (Italy), June 11, 2009.</ref> | ||
* Positioning: 100m (1σ); 20m(1σ, with reference stations). | |||
* SMS: up to 120 Chinese characters. | |||
*Timing: 20ns | |||
On November 2, 2006, China announced that from 2008 BeiDou would offer an open service with an accuracy of 10 meters, timing of 0.2 nanoseconds, speed of 0.2 meter/second. It followed that in February 2007, the fourth and also the last satellite of BeiDou-1 system, the BeiDou-1D was put into orbit, and after suffering from a control system malfunction, it was fully restored by the end of 2007. Then, the open service performances reached the levels described before.<ref>[http://en.wikipedia.org/wiki/Beidou_navigation_system Beidou Navigation System in Wikipedia]</ref><ref>[http://en.wikipedia.org/wiki/Compass_navigation_system COMPASS Navigation system in Wikipedia]</ref> | |||
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Initially the system will initially cover China and its neighbouring countries only, but will eventually extend into a global navigation satellite system by 2020. | Initially the system will initially cover China and its neighbouring countries only, but will eventually extend into a global navigation satellite system by 2020. | ||
==Notes== | ==Notes== | ||
Revision as of 09:48, 15 July 2011
| COMPASS | |
|---|---|
| Title | BeiDou Performances |
| Author(s) | GMV. |
| Level | Basic |
| Year of Publication | 2011 |
The Compass Navigation Satellite System (CNSS), or BeiDou-2, is China’s second-generation satellite navigation system capable of providing positioning, navigation, and timing services to users on a continuous worldwide basis.
The system has evolved from a regional system called BeiDou-1, and in the first phase will provide high-accuracy positioning services for users in China and its neighbouring regions. The long-term goal is to develop an independent global navigation satellite network similar to the GPS and GLONASS. [1]
COMPASS Performances
In May 2003, the successful launch of BeiDou-1C also meant the establishment of the BeiDou-1 navigation system, providing navigation, communication and timing services for the greater China area. The system services and performance characteristics at this time (2003) were: [2]
- Positioning: 100m (1σ); 20m(1σ, with reference stations).
- SMS: up to 120 Chinese characters.
- Timing: 20ns
On November 2, 2006, China announced that from 2008 BeiDou would offer an open service with an accuracy of 10 meters, timing of 0.2 nanoseconds, speed of 0.2 meter/second. It followed that in February 2007, the fourth and also the last satellite of BeiDou-1 system, the BeiDou-1D was put into orbit, and after suffering from a control system malfunction, it was fully restored by the end of 2007. Then, the open service performances reached the levels described before.[3][4]
The COMPASS system will provide two types of services: [1]
- a free service for civilian users with positioning accuracy of within 10 metres, velocity accuracy of within 0.2 m/s and timing accuracy of within 50 nanoseconds;
- a licensed service with higher accuracy even in complex situations for authorised and military users only.
Initially the system will initially cover China and its neighbouring countries only, but will eventually extend into a global navigation satellite system by 2020.
Notes
References
- ^ a b Compass on the Chinese Defence Today website
- ^ Compass/BeiuDou status presentation in Rome (Italy), June 11, 2009.
- ^ Beidou Navigation System in Wikipedia
- ^ COMPASS Navigation system in Wikipedia