Domestic version of "GPS" 2012 annual covering the Asia-Pacific (Figur
AP at 0:12 on the 17 January, China's Xichang Satellite Launch Center in the "long march on the 3rd C" carrier rocket successfully third Beidou Navigation Satellite into orbit.
Beidou satellite launch by the end of the third issue of the "Chang'e II"
According to the China Satellite Navigation Engineering Center, the person in charge, Compass satellite navigation system planning have launched five geostationary satellites and 30 non-geostationary orbit satellite, built navigation system with global coverage. Prior to this, has successfully launched two Beidou navigation satellites, this one for the geostationary orbit satellites. China's satellite navigation system
Special Management Office official said, Beidou satellite navigation systems, the development and application, will be open to the world, providing high-quality global free service.
Satellite successfully launched, the Xichang Satellite Launch Center, said, confidence and ability as the "Chang'e One" as the successful completion of plans by the end of 2010's "Change II" launch.
Advantage Beidou system 5 1. Both a location and communications, send a short message function to facilitate help, no other communication systems; GPS System can locate.
2. Cover large areas, there is no blind spot.
3. Particularly suitable for a wide range of user group management and data collection monitor user data transmission applications.
4. Can use GPS to make more extensive application.
5. Autonomous system, safe, reliable, stable, secure and strong, suitable for key departments.
System has widespread applications Has been successfully applied in mapping, telecommunications, water conservancy, fishery, Transportation , Forest fire prevention, disaster relief and national security fields. Especially in the South snow and ice storms in 2008, the earthquake relief and the Beijing Olympic Games played a very important role.
Chinese Academy of Sciences, the system designer Chia-Tung Shun, said Compass Navigation Satellite Systems will be in economic construction and national security play a significant role, Compass satellite navigation system, not only can not think can not be done.
Way to provide two kinds of services
Open service: free of charge in the service area to provide positioning, velocity and timing service, positioning accuracy of 10 meters, timing accuracy of 10 nanoseconds, velocity accuracy of 0.2 m / sec.
Authorized services: to authorize the user to provide a more secure position, velocity, timing and Communicate Integrity of information services and systems.
4 large satellite navigation system The world's existing four kinds of satellite navigation and positioning systems: the U.S. GPS, the European "Galileo", Russian "GLONASS" and China's "Compass" system.
The U.S. GPS service as early as covering a wide range of easy to use, accounting for the largest market share.
Beidou system "three steps" The first step is the pilot phase
The second step is to 2012 Plans to launch more than 10 satellites covering the Asia-Pacific region built Compass satellite navigation system; The third step is
2020
Completed by the 5 geostationary orbit and 30 non-geostationary orbit satellite network made the global satellite navigation system.
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