基于CA-CFAR检测下多假目标的压制干扰门限  

The Suppression Interference Threshold of Multi-False Target Under Cell Average Constant False Alarm Rate Detector

作　　者：吴筑莉 熊鑫 余国文[1] 郭淑芬 

机构地区：[1]空军预警学院,武汉430019

出　　处：《电子信息对抗技术》2018年第1期49-53,共5页Electronic Information Warfare Technology

摘　　要：在分析多假目标环境下单元平均恒虚警(CA-CFAR)检测器检测性能的基础上,提出一种多假目标压制干扰门限的概念,通过理论推导出压制干扰门限值,为分布式小型干扰机参数设置提供一定的理论参考。即当假目标落入雷达检测目标的参考单元内,假目标数量和功率的乘积超过压制干扰门限时,真实目标的检测概率将不大于0.1,压制干扰有效。同时分析了参考单元总数和虚警概率对压制干扰门限的影响。最后用仿真实验验证了压制干扰门限的有效性和可行性。Based on the analysis of the performance of CA-CFAR detector in multi-false target environment, a concept of multi-false target suppression interference threshold is proposed by mathematical derivation. When the product of the number of false targets in the detection cells and the power of the single false target exceeds the suppression interference threshold, the detection probability of the CA-CFAR detector to the real target approaches 0, that is, the suppression interference is effective. At the same time, the influence of the total number of reference cells and the false alarm probability on the suppression interference threshold is analyzed. Finally, the effectiveness and feasibility of the suppression interference threshold are verified by simulation experiments.

关 键 词：单元平均恒虚警 多假目标 压制干扰门限 检测概率 

分 类 号：TN972.3[电子电信—信号与信息处理]