子空间信号失配下的加权自适应检测器

doi:10.12305/j.issn.1001-506X.2023.07.07

Abstract

Abstract:

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.

Key words: signal mismatch, adaptive detection, subspace signal, constant false alarm rate (CFAR)

CLC Number:

TN957.51

Zhikai LIN, Weijian LIU, Lichang QIAN, Binbin LI, Bilei ZHOU, Zhaojian ZHANG, Hao CHEN. A weighted adaptive detector for mismatched subspace signal detection[J]. Systems Engineering and Electronics, 2023, 45(7): 1974-1980.

Figures/Tables 3

References 33

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A weighted adaptive detector for mismatched subspace signal detection

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