基于投影余角的多普勒雷达几何检测器

doi:10.12305/j.issn.1001-506X.2022.06.11

Abstract

Abstract:

To solve the problem of Doppler radar signal detection, the discrete Fourier transform is re-examined based on the geometric algebra tool. The Doppler radar geometric detector is designed with the projection angle as a new geometric test statistic. Compared with the traditional power/envelope detector, the performance of dynamic compression and constant false alarm of the proposed detector are excellent. Through several comparative experiments with existing constant false alarm rate detectors using power or envelope detection as its input, the excellent constant false alarm performance of the geometric detector and its ability to adapt to clutter and strong interference signals are illustrated. It provides a new perspective and a new tool for radar detection.

Key words: signal detection, Doppler radar, geometric detector, geometric algebra, background fluctuation, multi-target jamming

CLC Number:

Pu LIANG, Hongqi FAN, Qiang FU. Geometric detector for Doppler radar based on projected complementary angle[J]. Systems Engineering and Electronics, 2022, 44(6): 1854-1861.

Figures/Tables 10

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References 31

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参数含义	参数符号	典型值
积累脉冲数/个	N	512
虚警概率	P_fa	10^-5
脉冲重复频率/kHz	f_r	100
CFAR参考单元数目	L	32
噪声方差/dBm	2σ_w²	-2
信噪比/dB	ρ	20
杂噪比/dB	η	15
OS-CFAR排序参数	k	L/2

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Geometric detector for Doppler radar based on projected complementary angle

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