A multiple model probability hypothesis density(MM-PHD)filter is proposed to solve the track loss problem of PHD filter in highly maneuvering targets tracking. The MM-PHD filter bases on the particle PHD filter
and updates the state of the particles using the multiple model method. Then the updated state of the particles is used to evaluate the PHD distribution of the targets. The filter combines the features of both the PHD filter and the multiple model method and can deal with multi-targets' maneuvering with the number of targets unknown. The proposed filter estimates the number and the state of the targets more accurately than the existing filters do. Simulation results and comparisons with existing algorithms show that the number of targets estimated by the proposed algorithm is consistent with the real situation and the Wasserstein distance value that describes the estimation error decreases more than 50%.
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