Target-tracking Algorithm for Dissimilar Asynchronous Multi-sensor

For the target-tracking using active sensor and passive sensor with asynchronous sampling frequency,a new decoupled algorithm is proposed.On the sampling time without distance measurement,the tracking filter is processed by making up virtual measurement point.Because all the angle measurement information is effectively utilized by the algorithm,the performance of tracking filter is elevated.Simulation results show that the algorithm has high tracking precision and its computational cost is smaller.