Real-time detection of sensor bias for the distributed sensor system

Focusing on the problem that when should sensor bias need to be estimated and corrected in a distributed multi-sensor system, real-time detection of sensor bias is studied based on the test statistic. First, effects of sensor bias to tracks reported by each sensor at fusion center are analyzed. Then the test statistic of real-time detection of sensor bias is given, while the detection threshold with criteria is also provided. Finally, several appropriate simulation environments are built to analyze the detection of sensor bias. Further real data are used to test the performance of the detection algorithm. And simulation results and real data test results demonstrate the reliability and applicability of the detection algorithm presented in this paper.