Adaptive detection in the presence of signal mismatch  

作　　者：Weijian Liu Wenchong Xie Rongfeng Li Fei Gao Xiaoqin Hu Yongliang Wang 

机构地区：[1]College of Electronic Science and Engineering, National University of Defense Technology [2]Air Force Early Warning Academy

出　　处：《Journal of Systems Engineering and Electronics》2015年第1期38-43,共6页系统工程与电子技术（英文版）

基　　金：supported by the National Natural Science Foundation of China(61102169;60925005)

摘　　要：The problem of adaptive detection in the situation of signal mismatch is considered; that is, the actual signal steering vector is not aligned with the nominal one. Two novel tunable detectors are proposed. They can control the degree to which the mismatched signals are rejected. Remarkably, it is found that they both cover existing famous detectors as their special cases. More importantly, they possess the constant false alarm rate（CFAR）property and achieve enhanced mismatched signal rejection or improved robustness than their natural competitors. Besides, they can provide slightly better matched signals detection performance than the existing detectors.The problem of adaptive detection in the situation of signal mismatch is considered; that is, the actual signal steering vector is not aligned with the nominal one. Two novel tunable detectors are proposed. They can control the degree to which the mismatched signals are rejected. Remarkably, it is found that they both cover existing famous detectors as their special cases. More importantly, they possess the constant false alarm rate（CFAR）property and achieve enhanced mismatched signal rejection or improved robustness than their natural competitors. Besides, they can provide slightly better matched signals detection performance than the existing detectors.

关 键 词：mismatched signal detection adaptive coherence estimator（ACE） adaptive matched filter（AMF） generalized likelihood ratio test（GLRT） tunable detector 

分 类 号：TN911.23[电子电信—通信与信息系统]