一种新的IMM-PDA滤波器跟踪门

A New Gating for IMM-PDA Filter

针对杂波环境下跟踪机动目标问题,研究了两种现行的跟踪门,模型跟踪门(MBG)和集中跟踪门(CG)。在此基础上提出了新的跟踪门,分别是模型概率加权跟踪门(MPWG)和两级模型概率加权跟踪门(TS-MPWG)。用RMS误差、跟踪丢失百分比和计算量比较了这几种跟踪门的性能。从仿真结果可以看出,在杂波环境下用IMM-PDAF进行机动目标跟踪,TS-MPWG跟踪门优于其它方法。

In view of maneuvering target tracking in cluttered environment, this paper reviews two existing gating techniques, namely, Model Based Gating （MBG） and Centralized Gating （CG）. In addition, it proposes two new gating techniques, called Model Probability Weighted Gating （MPWG） and Two-Stage Model Probability Weighted Gating（TS-MPWG）. These gating techniques are compared in terms of RMS errors, percentage of track loss and computational load. The simulation results suggest that： tracking maneuvering targets in cluttered environment with IMM-PDAF, gating via TS-MPWG is preferable to other methods.