基于压缩感知的机载雷达GLRT检测器  

Airborne Radar GLRT Detector Based on Compressed Sensing

作　　者：张焱[1] 叶鹏宇 ZHANG Yan;YE Pengyu(The 54th Research Institute of CETC,Shijiazhuang 050081,China;QianShan Avionics LLC,Xi’an 710065,China)

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081 [2]陕西千山航空电子有限责任公司,陕西西安710065

出　　处：《无线电工程》2022年第6期983-988,共6页Radio Engineering

基　　金：国家自然科学基金(61971329)。

摘　　要：利用正确的先验知识,比如先验杂波谱,往往能够提高检测性能。讨论了在已知和未知先验杂波谱下的机载距离扩展目标检测问题。已知先验杂波谱情况下,提出了基于知识辅助的广义似然比检验(Generalized Likelihood Ratio Test,GLRT)检测器。在先验杂波谱未知的情况下,提出了基于压缩感知(Compressive Sensing,CS)的GLRT检测器。将提出的检测器和传统的检测器进行对比。仿真结果表明,所提出的检测器相比于传统的检测器在性能上有所提高。Using correct prior knowledge,such as prior clutter spectrum,can often improve the detection performance.The problem of airborne range extended target detection under known and unknown prior clutter spectrum is discussed.When the prior clutter spectrum is known,a Generalized Likelihood Ratio Test(GLRT)detector based on knowledge assistance is proposed.When the prior clutter spectrum is unknown,a GLRT detector based on Compressive Sensing(CS)is proposed.Finally,the proposed detector is compared with the traditional one.Simulation results show that the performance of the proposed detector is better than that of the traditional one.

关 键 词：机载雷达 先验杂波谱 知识辅助 压缩感知 广义似然比检测 

分 类 号：TN957[电子电信—信号与信息处理]