一种基于模糊聚类的PHD航迹维持算法  

Fuzzy Clustering Based Algorithm for Track Continuity in PHD Filter

作　　者：欧阳成[1] 姬红兵[1] 田野[1] 

机构地区：[1]西安电子科技大学电子工程学院,陕西西安710071

出　　处：《电子学报》2012年第6期1284-1288,共5页Acta Electronica Sinica

基　　金：国家自然科学基金(No.60871074)

摘　　要：针对杂波环境下数量变化的多目标航迹关联问题,提出一种基于模糊聚类的PHD航迹维持算法.该算法充分利用多帧信息,对当前时刻状态进行多步预测,并根据惯性进行加权,然后利用模糊聚类求得当前估计属于每条航迹的隶属度,从而得到最终的航迹.与传统的估计与航迹关联算法不同,该算法在更新每条航迹信息时,不仅仅是简单地对相邻帧之间的对数似然比进行求和,而是通过加权聚类等操作综合考虑了多帧信息.实验结果表明,所提算法能够更好地保持目标航迹,即使在目标出现交叉的地方也能达到很好的跟踪精度,具有较强的鲁棒性和优良的航迹维持性能.Due to the difficulty in association and estimation of multitarget track in the presence of data association uncer tainty, clutter, noise and missdetection, a fuzzy clustering based algorithm for track continuity in probability hypothesis density （PHD） filter is proposed in this paper. Firstly, a multistep prediction of current target states is made, and then the weighted labels are assigned to them according to the inertia. Secondly, the fuzzy membership degrees of the current state estimates belonging to the tracks are obtained with the maximum entropy fuzzy clustering. Finally, the tracks are maintained by the use of all the information. Different from the traditional estimatetotrack association,the proposed algorithm does not update the track information by simply summing the log likelihood ratios between adjacent frames,but takes the entire multiframe information into account by the opera t.ions such as weighting and clustering. The simulation results show that the proposed algorithm can maintain target tracks more accu rately, even when the targets cross each other, implying strong robustness and excellent performance of track continuity.

关 键 词：模糊聚类 概率假设密度滤波 数据关联 航迹维持 

分 类 号：TP302.7[自动化与计算机技术—计算机系统结构]