单站直达波欺骗干扰检测与抑制的DPCA方法

doi:10.12305/j.issn.1001-506X.2021.06.09

Abstract

Abstract:

Aiming at the issue of detection and suppression of monostatic direct-wave deceptive jamming for synthetic aperture radar (SAR), a detection and suppression approach based on displace phase center antenna (DPCA) is proposed. A model of jamming signal in image domain is established under DPCA condition. The analysis shows that there is only space-variant phase offset and position offset in the master and slave images. Furthermore, image degradation model is also introduced to estimate and suppress deceptive jamming in master image based on DPCA detection. Simulations on point array and extended target verify both the model derived and the proposed deceptive jamming estimation and suppression algorithm. The proposed algorithm causes little information loss of scene covered by decoy target. It works for both main-lobe and side-lobe monostatic ideal direct-wave deceptive jamming.

Key words: synthetic aperture radar (SAR), direct-wave deceptive jamming, displace phase-center antenna (DPCA), image degradation model

CLC Number:

TN957.51

Yuming JIANG, Jingwen LI, Bing SUN. DPCA method for detection and suppression of monostatic direct-wave deceptive jamming[J]. Systems Engineering and Electronics, 2021, 43(6): 1524-1532.

Figures/Tables 10

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References 20

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参数	取值
工作模式	聚束
地距分辨率/(m×m)	1×1
下视角/(°)	45
通道间距/m	0.15
重频/Hz	2 000
波长/m	0.03
场景中心坐标/m	[0, 5 000]
成像区尺寸/(m×m)	500×500

参数	测量值	估计值	理论值
方位偏移/m	0.771 7	0.711 6	0.711 6
方位横向偏移/m	-0.061 3	-0.061 1	-0.061 2
相位偏移/rad	0.034 2	0.034 1	0.034 2

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DPCA method for detection and suppression of monostatic direct-wave deceptive jamming

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