Particle filter initialization in non-linear non-Gaussian radar target tracking  

作　　者：Wang Jian Jin Yonggao Dai Dingzhang Dong Huachun Quan Taifan 

机构地区：[1]Dept. of Electronics and Communication Engineering, Harbin Inst. of Technology, Harbin 150001, P. R. China [2]Dept. of Electronics and Information Engineering, Yanbian Univ., Yanbian 133002, P. R. China

出　　处：《Journal of Systems Engineering and Electronics》2007年第3期491-496,共6页系统工程与电子技术（英文版）

基　　金：the National Natural Science Foundation of China (60572038).

摘　　要：When particle filter is applied in radar target tracking, the accuracy of the initial particles greatly effects the results of filtering. For acquiring more accurate initial particles, a new method called “competition strategy algorithm” is presented. In this method, initial measurements give birth to several particle groups around them, regularly. Each of the groups is tested several times, separately, in the beginning periods, and the group that has the most number of efficient particles is selected as the initial particles. For this method, sample initial particles selected are on the basis of several measurements instead of only one first measurement, which surely improves the accuracy of initial particles. The method sacrifices initialization time and computation cost for accuracy of initial particles. Results of simulation show that it greatly improves the accuracy of initial particles, which makes the effect of filtering much better.When particle filter is applied in radar target tracking, the accuracy of the initial particles greatly effects the results of filtering. For acquiring more accurate initial particles, a new method called “competition strategy algorithm” is presented. In this method, initial measurements give birth to several particle groups around them, regularly. Each of the groups is tested several times, separately, in the beginning periods, and the group that has the most number of efficient particles is selected as the initial particles. For this method, sample initial particles selected are on the basis of several measurements instead of only one first measurement, which surely improves the accuracy of initial particles. The method sacrifices initialization time and computation cost for accuracy of initial particles. Results of simulation show that it greatly improves the accuracy of initial particles, which makes the effect of filtering much better.

关 键 词：radar target tracking particle filter initialization. 

分 类 号：TN953[电子电信—信号与信息处理]