From 2000 to 2003, China has launched three Compass Test Satellites successfully, so that the Compass TestSatellite System was developed. China began to provide the RDSS (Radio Detection Satellite System) service inChina area around through the test system. Based on the experiences accumulated from the Compass Test SatelliteSystem, China decided to build the Compass Navigation Satellites System, which may provide both the RNSS(Radio Navigation Satellite System) service and the RDSS service in 2004. The first step is to develop a regionalnavigation satellite system, and then the global system will be developed as the second step. According to the systemrequirements, China Academy of Space Technology (CAST) had completed the total work of the satellite systemdesign and the main work of the satellite manufacture. Up to now, 13 satellites for the first step of the Compasssystem had been launched successively. By the end of 2012, CAST will complete the manufacture of the leftsatellites for the first step. In this paper, the function and the composing of the China Compass Satellite System areintroduced. Besides, the experience of the design and the manufacture of the Compass Satellite System aresummarized. At last, the analyzed result of the main character data about the Compass satellites in orbit is given.
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