Aiming at problem that in multi-sensor data fusion weight of each sensor is difficult to be determined

combined with fuzzy theory

propose a multi-sensor weighted fusion algorithm based on fuzzy entropy. Because fuzzy extent of the effective data set of every sensor is different

by calculating fuzzy entropy of realtime effective measurement set

weight of the sensor in fusion can be determined with the effective data only

instead of any priori information about environment and sensor parameters. Simulation results illustrates that the method improves measurement precision of the fusion system.