一种多普勒盲区下的航迹片段关联方法  

A Method of Track Segment Association in Doppler Blind Zone

作　　者：韩伟[1] 陈传生 李志淮[1] HAN Wei;CHEN Chuansheng;LI Zhihuai(Air Force Early Warning Academy, Wuhan 430019, China)

机构地区：[1]空军预警学院,湖北武汉430019

出　　处：《雷达科学与技术》2020年第3期239-246,共8页Radar Science and Technology

基　　金：国家自然科学基金(No.61601510)。

摘　　要：在多目标跟踪过程中,机载预警雷达固有的多普勒盲区容易引起目标航迹中断和重起批,形成大量航迹片段,从而增加雷达情报分析的难度。基于此,提出了一种改进的多普勒盲区下的航迹片段关联方法。在传统基于二维分配的关联方法基础上,将多普勒盲区和目标类别信息并入到航迹片段关联的各个环节。预处理阶段采用盲区滤波算法对“老”航迹进行预测,粗关联阶段增加径向速度作为关联信息,二维分配阶段,利用目标类别信息修正分配代价函数。仿真结果表明:在复杂多目标环境且存在多普勒盲区的条件下,该方法航迹中断数较传统方法有明显下降,航迹寿命有明显提升。In multi-target tracking,Doppler blind zone of airborne early warning radar can easily cause target track termination and new track initiation so as to produce many track segments,which accordingly increases radar intelligence analysis difficulty.Aiming at this problem,an improved method of track segment association under the condition of Doppler blind zone(DBZ)is proposed.Based on conventional two-dimensional assignment,the DBZ and target classification information are incorporated into all steps of track segment association.In preprocessing step,the particle filtering algorithm under the condition of DBZ is used to perform prediction of the“old”track;in rough association step,radial velocity is used as association information;and in two-dimensional assignment step,target classification information is used to corrected cost function.The simulation results show that this method has obvious descent of track termination rate and extension of track life compared with conventional methods in complex multiple-target environment and DBZ.

关 键 词：多普勒盲区 航迹片段关联 二维分配 目标类别信息 航迹中断数 航迹寿命 

分 类 号：TN957[电子电信—信号与信息处理]