China plans to launch two Beidou navigation satellites in early 2007, meet the needs of users in China and neighboring regions around 2008, conduct systematic networking and tests, and gradually expand the system into a global navigation satellite system.

　　The space segment of the Beidou Navigation Satellite System, which is under construction, will consist of five geostationary orbit satellites and 30 non-geostationary orbit satellites, providing immediate and authorized services. The open service is to provide free positioning, speed measurement and timing services in the service area. The positioning accuracy is 10 meters, the timing accuracy is 50 nanoseconds, and the speed measurement accuracy is 0.2 meters/second. Authorization service is to provide more secure positioning, speed measurement, timing and communication services and system integrity information to authorized users. With the popularization and application of the Beidou-1 satellite navigation and positioning system and the research and development of the next generation satellite navigation and positioning system (CNSS) in China.

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