Research and Design of Filter in Ship-Based Passive Tracking System

This paper mainly studies angle-measurement based multi-model filtering algorithm to overcome the existing problems in the applications of traditional filtering approaches for bearing-only target locating and tracking system. By analyzing bearing-only target motion characteristic and the feasibility of using multi-model technology, the IMM is adopt as filtering algorithm to solve existing problem. As the results, the two dimensional bearing-only tracking accuracy of real target is improved and false tracking is greatly limited. Moreover, computation cost of IMM is analyzed for the real-time demand of bearing-only tracking. Finally, this paper gives some concrete summary of multi-model choosing principle. The application of the proposed approach in a simulation system proves its effectiveness and practicability.