基于UCA-FDA雷达距离补偿的DOA估计方法

doi:10.12305/j.issn.1001-506X.2024.06.14

Abstract

Abstract:

Mainlobe deceptive jamming brings challenges to radar applications in electronic countermeasures. In order to solve the direction of arrival (DOA) estimation problem of mainlobe distance deception jamming in electronic countermeasures, a distance compensation DOA estimation method based on uniform circular array-frequency diverse array (UCA-FDA) radar is proposed. The proposed method eliminates the influence of distance dimension by compensating the distance of radar receiving signals, and inputs the angle joint direction vector and the processed covariance matrix into the multiple signal classification (MUSIC) algorithm to obtain the azimuth and elevation angles of the target. In addition, the proposed method also increases the ability to distinguish multiple targets from the same direction, with the advantages of high angle estimation accuracy, good anti-jamming performance and fine application in low snapshot scene. Simulation experiments also prove the effectiveness of the proposed method.

Key words: mainlobe distance deceptive jamming, frequency diverse array (FDA) radar, uniform circular array (UCA), DOA estimation

CLC Number:

TN957.52

Zhen LI, Huafeng HE, Tao ZHOU, Xin ZHANG, Xiaofei HAN, Liyuan WANG. DOA estimation method of UCA-FDA radar with distance compensation[J]. Systems Engineering and Electronics, 2024, 46(6): 1967-1974.

Figures/Tables 10

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参数	数值	参数	数值
载频/GHz	0.4	半径R₁/m	0.375
频率步进量/kHz	5	半径R₂/m	0.375
带宽/MHz	80	目标1	(110 km, 10°, 30°)
快拍数	800	目标2	(115 km, 10°, 30°)
发射阵元数	10	目标3	(123 km, －10°, 30°)
接收阵元数	10	目标4	(126 km, 10°, 40°)

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DOA estimation method of UCA-FDA radar with distance compensation

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