基于多维分配的多普勒盲区目标点迹航迹关联方法

Target plot-to-track association method in Doppler blind zone based on multi-dimension assignment

机载预警雷达固有的多普勒盲区(Doppler blind zone,DBZ)会造成目标航迹的中断,而多目标杂波环境使航迹中断更为严重。在引入多普勒盲区信息的二维分配算法基础上,提出了一种基于多维分配算法的多目标点迹航迹关联方法。该方法充分利用目标航迹演变信息,对雷达的连续多帧量测数据进行滑窗处理,构建出多维分配的代价函数,最后求得最小代价条件下函数的解,该解即为目标点迹航迹的分配结果。仿真结果表明,在多目标杂波环境且存在多普勒盲区的条件下,该方法的航迹中断率较二维分配算法有了进一步的降低。

The inherent Doppler blind zone(DBZ)of airborne early warning radar can bring out target track termination with the worse effect in multi-target and clutter environment.Based on two-dimension assignment algorithm with DBZ information,a new plot-to-track association method based on multi-dimension assignment algorithm is proposed.Firstly,the evolution information of target track is used enough,and the radar’s continuous multi-frame measurement data are used to perform sliding window processing.Secondly,the cost function of multi-dimension assignment is constructed.Finally,the solution of function on the condition of minimal cost is used as the targets plot-to-track assignment solution.The simulation results show that this method has further descent of track termination rate compared with two-dimension assignment algorithm in multi-target and clutter environment with DBZ.