采用改进粒子滤波的雷达扩展目标检测前跟踪

doi:10.3969/j.issn.1001-2400.2011.02.018

Abstract

Abstract:

The system dynamic model and measurement model in the particle filter(PF) are established in a sequence of radar range-Doppler measurements and a linear extended target model is proposed, which is more suitable for describing a maneuvering target than the conventional point target model. Furthermore, the likelihood ratio function of the new model is also derived. In addition, the conventional PF is improved here to reduce the number of particles. Due to the macthing between the proposed target model and the integration function of TBD algorithm over time, an improved probability of detection for the dim target is obtained. Simulation results demonstrate that the proposed method is capable of detecting and tracking a target with the SNR of 1dB stably.

Key words: track-before-detect, particle filter, extended target, likelihood ratio function

WU Zhaoping;ZHU Kairan;SU Tao;LU Jin. Extended radar target tracking before detection using the modified particle filter[J].J4, 2011, 38(2): 99-104.

References

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Extended radar target tracking before detection using the modified particle filter

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