J4 ›› 2014, Vol. 41 ›› Issue (5): 18-23.doi: 10.3969/j.issn.1001-2400.2014.05.004

• Original Articles • Previous Articles     Next Articles

Novel PHD filter in unknown clutter environment

LI Cuiyun1;JIANG Zhou1,2;JI Hongbing1   

  1. (1. School of Electronic Engineering, Xidian Univ., Xi'an  710071, China;
    2. Unit 95972, PLA, Jiuquan  735018, China)
  • Received:2013-06-13 Online:2014-10-20 Published:2014-11-27
  • Contact: LI Cuiyun E-mail:cyli@xidian.edu.cn

Abstract:

Aiming at improving the poor performance of the Probability Hypothesis Density(PHD) filter when the clutter model and the prior knowledge are mismatched, a novel PHD filter into which we introduce the augmented state space and which is used under the unknown clutter circumstance is proposed in this paper. The proposed filter can distinguish the target state space and the clutter state space by the augmented state space. Using the estimate of the unknown clutter model from the measurement, the filter can avoid the tracking performance reduction caused by the improper model selection of the unknown clutter. Simulation results show that the proposed algorithm can achieve a stable tracking performance under the unknown clutter circumstance and a tracking accuracy equal to that of the conventional PHD filter used in the unknown clutter circumstance in the real-time context.

Key words: multitarget tracking, probability hypothesis density, unknown clutter, augmented state space

CLC Number: 

  • TN953