Abstract: On the basis of analyzing the former methods of information sharing

this paper proposed a new information sharing method based on micro-platform integrated navigation system. A formula of fallibility probability is constructed using the threshold value. The information factor for each local filter is adjusted according to the fallibility probability in its own corresponding subsystem. Meanwhile

the method of adjusting the threshold value on line can reduce the probability of the false alarm and missing alarm in the FDI (Failure Diagnosis and Isolation) process. The simulation experiment shows that this method can effectively reduce the computation load and improve the precision of integrated navigation system.