A weighted adaptive detector for mismatched subspace signal detection

被引：0
|
作者：
Lin Z. [1 ]
Liu W. [1 ]
Qian L. [2 ]
Li B. [1 ]
Zhou B. [1 ]
Zhang Z. [1 ]
Chen H. [1 ]
机构：
[1] Air Force Early Warning Academy, Wuhan
[2] Unit 31511 of the PLA, Beijing
来源：
Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics | 2023年 / 45卷 / 07期
关键词：
adaptive detection; constant false alarm rate (CFAR); signal mismatch; subspace signal;
D O I：
10.12305/j.issn.1001-506X.2023.07.07
中图分类号：
学科分类号：
摘要：
For the multichannel radar system, array error and sidelobe interference often lead to signal mismatch, that is, the real steering vector of the target is different from the assumed value of the radar system. To solve the problem of mismatch signal detection with subspace model, a weighted adaptive detector with constant false alarm rate characteristics is proposed. Meanwhile, the analytical expressions of probabilities of detection and false alarm are derived. According to the needs of the system, the proposed detector can detect the mismatch signal flexibly by adjusting the weighted coefficient. In addition, for the detection problem without signal mismatch, the proposed detector, with an appropriate weight coefficient, can provide a higher probability detection than the existing detectors. © 2023 Chinese Institute of Electronics. All rights reserved.
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页码：1974 / 1980
页数：6
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