Extended radar target tracking before detection using the modified particle filter

被引：1
|
作者：
Wu Z. [1 ]
Zhu K. [1 ]
Su T. [1 ]
Lu J. [1 ]
机构：
[1] National Lab. of Radar Signal Processing, Xidian Univ.
来源：
Xi'an Dianzi Keji Daxue Xuebao/Journal of Xidian University | 2011年 / 38卷 / 02期
关键词：
Extended target; Likelihood ratio function; Particle filter; Track-before-detect;
D O I：
10.3969/j.issn.1001-2400.2011.02.018
中图分类号：
学科分类号：
摘要：
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 matching 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 1 dB stably.
引用
收藏
页码：99 / 104
页数：5
相关论文
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