A Multipath Effect Suppression Algorithm Based on the GM-PHD Filter in Skywave-OTHR

The target detection mechanism of Skywave Over The Horizon Radar (Skywave-OTHR) endows itself many advantages, causing meanwhile a series of problems in detection and tracking. Among the rest, the effect of multipath sharps focus. In this paper, based on the application of Gaussian mixture probability hypothesis density (GM-PHD) filter in the tracking of skywave radar, a multipath effect suppression algorithm is proposed. In order to determine whether the multipath phenomenon is existed and suppress its effect, the target states, which are the results of the inversion calculations of the radar measurements, will be transferred into the real trajectory of the targets after the processing of GM-PHD. The algorithm is verified by computer simulation.