Abstract:At Beijing time 21:52, March 30th 2015, China's first New-Generation Beidou Navigation satellite was successfully launched from Xichang Satellite Launch Center (XSLC),which has the meaning of China's Beidou Navigation System began to expand from regional to the world. Shanghai Engineering Centre for Microsatellites (SECM),Chinese Academy of Sciences (CAS),is the prime manufacture of the satellite. Fronted with stringent mission requirements, high technical difficulty and tight development schedule, SECM has assimilated innovation concept into the satellite development, break through a number of key technologies, and successfully completed the satellite development and launch. Until now, the satellite in-orbit test has been going well. Both functions and performance have met with the mission requirements. This satellite, the first CAS navigation dedicated platform, experiments and validates key technologies including the frame-panel light-weight satellite structure for the direct orbit injection, star-tracker based attitude determination, and high functional density avionics architecture. These technologies have laid a strong foundation for the batch production of the global constellation. It's also the first time using the launcher upper-stage to launch the satellite into orbit directly. The phased array antennas inter-satellite link technology and auto-navigation scheme have been firstly verified in orbit. High percentage of domestically produced equipment and components have been applied onboard the satellite. The concept of “functional chain” has been brought out, dividing the satellite into payload, mechanical and thermal, avionics, AOCS functional chains, greatly enhancing the reliability and functional density of the satellite. It's also the first geostationary, long-lifetime, high reliability satellite undertaken by the CAS.