Abstract: Beidou satellite navigation location system is China's first generation satellite navigation system.The star sensor is a high precision attitude-measuring instrument.On the basis of non-feedback federal filtering, Beidou navigation lo cation system and the star sensor are used together in an integrated navigation system in order to set up the SINS/Beidou/star integrated navigation system.From the characteristics of Beidou and the star sensor, causes of delay and asynchronous problem in the instrumentation are analyzed, and a solution is proposed.Simulation shows that this integrated navigation system has high precision and good tolerance to faults.This shows application potentials for the Beidou system in defense industries.

Key words: integrated navigation, SINS, Beidou satellite navigation, federal filtering, star sensor