Abstract
A particle filter based on adaptive part resampling(APRPF)is proposed to solve the problem of particle impoverishment introduced by traditional resampling algorithm.In APRPF,only small portion of samples are resampled in a step by step manner,and a recursive formula is developed to evaluate the measurement of particle degeneracy(MPD).The resampling process continues until MPD satisfies the given condition.After resampling,the particle set consists of two subsets,one contains new born particles,and another contains unresampled particles.The former can help to alleviate particle degeneracy,whereas the latter is in favor of improving the diversity of particles.Experimental results show that APRPF has less computational cost and more precise filtering results than sampling importance resampling(SIR),auxiliary particle filter(APF) and regularized particle filter(RPF).
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