基于非合作捷变频雷达的无源探测系统微弱目标检测技术研究

It has very important theoretical and practical value to improve the performance of passive detection system and anti-stealth targets by research on the weak target detection of non-cooperative pulse radar.But it is more representative and military significant for passive detection technology research based on a noncooperative frequency agile radar, which could provide strong technical support torealize territorial sea area normal monitoring by the use of non-cooperative bistatic radar systems.However, duet to the military sensitivity, few documents were published..Considered from the traditional single-beam processing and multi-dimensional domain,research will be carried out based on algorithms by mixed integration and the trace of coviarance matrix seperately.Then, different methods will be presented through simulation and experimental data validation, which could promote passive detection systems engineering process based on non-cooperative radar and provide technical support for early realization of the territorial sea normal monitoring.

开展基于非合作脉冲雷达的微弱目标检测技术研究对于提高无源探测系统作用距离及反隐身目标等具有非常重要的理论和应用价值。而以应用较广泛的捷变频雷达为非合作辐射源的无源探测技术研究，更具代表性和军事意义，能为利用非合作双基地雷达实现对领海区域常态监测提供有力的技术支撑，具有较为广阔的军事应用前景。但限于军事敏感性，该方面公开文献很少。.本课题围绕基于非合作捷变频雷达的微弱目标检测，从传统单波束处理和多维域处理两方面，分别开展基于混合积累和基于协方差矩阵迹的微弱目标检测算法探索性研究，并通过仿真分析和实测数据验证，研究适合不同检测需求的微弱目标检测处理方法，为推动基于非合作雷达的无源探测系统工程化进程，利用其尽早实现对我国领海常态化监测提供技术支撑。

本课题围绕非合作双基地雷达微弱目标检测，以非合作远程大型预警相控阵雷达为辐射源，针对回波数据矩阵，从数学模型角度，开展了基于协方差矩阵迹的微弱目标检测算法研究；针对辐射源工作模式，开展了基于任务解交织的微弱目标检测算法研究；针对空间目标运动特性，开展了基于轨道预测的空间目标微弱目标检测算法研究；针对捷变频工作特性，开展了基于捷变频雷达的微弱目标检测算法研究；针对非合作双基地雷达工作原理，开展了基于多假设目标跟踪（MHT）的跟踪算法研究；针对外场试验过程中的波束分裂现象，开展了抗波束分裂算法研究，通过仿真和大量实测数据验证了提出算法的有效性。外场试验结果表明，算法能有效的对空中/空间目标进行长时间积累检测，并实现目标跟踪。.课题研究成果具有较好的普适性，推广价值高，依托课题研究成果的型号建议书已获军委批准，对于促进我国以非合作雷达为辐射源的无源探测技术发展提供有力技术支撑，具有重要的理论及军事应用价值。