机载监视雷达地面运动目标跟踪技术研究

项目名称： 机载监视雷达地面运动目标跟踪技术研究

项目编号： No.61471019

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 孙进平

作者单位： 北京航空航天大学

项目金额： 65万元

中文摘要： 本项目探索研究应用于机载监视雷达的地面运动目标跟踪技术，针对目标速度低于GMTI最小可检测速度时出现的量测丢失问题，拟采用结合SAR成像输出与GMTI输出的量测形成处理，用SAR相干变化检测（CCD）结果补充目标量测数据；针对目标密集、目标运动特性及环境复杂、虚警率高等特点，基于多假设跟踪的处理框架，拟采用知识辅助技术，充分利用杂波图、目标特征、地面道路网和数字高程数据等先验信息，进行有效的多阶段假设管理；针对遮挡等因素产生的点迹中断问题，采用图模型技术实现中断航迹缝合；对地面群目标运动特性进行建模，设计群合并、分离及交叉行为的判断准则，在假设管理中兼顾群质心和元素的跟踪，同时得到群的结构信息。通过项目的研究，期望形成一种多阶段，计算性能改善明显的地面运动目标多假设跟踪处理方法。

中文关键词： 地面运动目标跟踪；多假设跟踪；图模型；群目标跟踪；相干变化检测

英文摘要： This project will dedicate to the research of ground moving target tracking techniques applied to airborne surveillance radar. As to the problem of measurement losing, that occurs when the velocity of target is less than minimum detectable velocity of GMTI, we plan to accomplish measurement formation by combining the imaging results of SAR and the outputs of GMTI. That means the measurement data of target will be supplied by the results of SAR coherent change detection (CCD). Considering the intensive targets, target moving characteristics, complex environment and high false alarm rate, we plan to work on effective multistage hypothesis management making full use of a-priori knowledge, such as clutter-map, target characteristics, road network, digital elevation data and so on, with knowledge-aided technique based on the framework of multiple hypothesis tracking processing. The discontinued tracklets will be stitched with graphical model technique for the discontinued target plots problem due to occlusion and other factors. The model of ground group target moving characteristic will be constructed, and the judge criterions for group behaviors of combination, separation and cross will be designed. Meanwhile, we will give attention to tracking on both the center of mass and elements, and obtain the structure information of group during hypothesis management. We hope to form a multistage multiple hypothesis processing method with significantly improved computation performance for ground moving target through this project.

英文关键词： Ground moving target tracking;MHT;Graphical model;Group target tracking;CCD