基于多接收机协同的无源测向及SAR欺骗干扰方法研究

doi:10.12305/j.issn.1001-506X.2023.12.09

Abstract

Abstract:

When the deception jamming is implemented on synthetic aperture radar (SAR), the jammer usually needs to obtain some key parameters in advance, such as the speed of carrier platform of SAR, the slow time of azimuth, the nearest oblique distance from the jammer to the carrier platform of SAR, and the self-position of the jammer, etc. However, the acquisition of these key parameters above usually needs complex reconnaissance equipments. In response to this problem, a passive direction-finding and SAR deception jamming method based on multi-receiver coondination is proposed in this paper. This method uses the arrangement of jammers and receivers and the time difference of arrival (TDOA) information between the receivers, and effectively solves the problem of the requirement for complex equipment to reconnoitre the above key parameters, and greatly simplifies the configuration of the interference system. According to the TDOA information, the pitch angle and horizontal azimuth of jammer relative to the carrier platform of SAR can be calculated, so as to realize the passive direction-finding of carrier platform of SAR. On this basis, a deception jamming algorithm against SAR is proposed and compared with the existing deception jamming algorithm against SAR based on multi-receiver coondination. The result shows that, with the increase of distance between the generated false target and the jammer, the false target focusing effect and real-time performance of the proposed method are better than that of the existing methods.

Key words: synthetic aperture radar (SAR), deception jamming, time difference of arrival (TDOA), minimum condition number, passive direction-finding

CLC Number:

TN95

Yongzhen LI, Yemin LIU, Shiqi XING, Datong HUANG, Zhengwen LU. Study on passive direction-finding and SAR deception jamming method based on multi-receiver cooperation[J]. Systems Engineering and Electronics, 2023, 45(12): 3792-3805.

Figures/Tables 16

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References 11

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参数	符号	取值
平台速度/(m·s^-1)	v_a	200
信号载频/GHz	f_c	10
信号带宽/MHz	B	100
信号脉宽/μs	T_p	5
场景中心斜距/km	R₀	10
平台飞行高度/km	H	8
方位向采样频率/Hz	PRF	500

品质指标	目标序号
品质指标	P₁	P₂	P₃	P₄	P₅	P₆	P₇	P₈	P₉
真目标距离向误差/m	-	-	-	-	-	-	-	-	-
假目标距离向误差/m	0.085	0.081	0.084	0.087	0.080	0.084	0.086	0.083	0.082
真目标方位向误差/m	-	-	-	-	-	-	-	-	-
假目标方位向误差/m	0.011	-0.011	-0.202	0.013	-0.011	-0.105	0.013	0.013	-0.018
真目标方位向IRW/m	0.889	0.890	0.889	0.885	0.879	0.885	0.893	0.899	0.893
假目标方位向IRW/m	1.041	1.099	1.049	1.099	1.103	1.095	1.086	1.091	1.086
真目标方位向PSLR/dB	-13.905	-13.059	-13.903	-12.987	-13.020	-13.079	-13.177	-13.301	-13.185
假目标方位向PSLR/dB	-13.428	-13.047	-13.275	-12.845	-12.141	-12.921	-12.549	-12.396	-12.229
真目标方位向ISLR/dB	-11.961	-11.762	-11.867	-11.926	-11.574	-11.919	-11.647	-11.895	-11.748
假目标方位向ISLR/dB	-11.908	-11.711	-11.914	-11.819	-11.299	-11.805	-11.466	-11.373	-11.410

品质指标	目标序号
品质指标	P₁	P₅	P₉
目标方位向IRW(OLR)/m	1.111	1.081	1.047
目标方位向IRW(NOLR)	1.212	1.201	1.166
目标方位向PSLR(OLR)	-13.000	-12.965	-12.969
目标方位向PSLR(NOLR)	-12.783	-12.858	-12.966
目标方位向ISLR(OLR)	-12.344	-12.441	-12.247
目标方位向ISLR(NOLR)	-12.000	-11.643	-11.832

品质指标	目标序号
品质指标	P₁	P₂	P₃	P₄	P₅	P₆	P₇	P₈	P₉
虚假目标距离向误差/m	-1.001	-0.001	0.832	0.165	-0.001	-0.001	1.165	-0.001	-1.168
	-0.168	-0.001	-0.001	-0.001	-0.001	0.165	-0.168	-0.001	-0.168
	0.165	-0.001	-0.168	0.165	-0.001	-0.168	0.165	-0.001	-0.168
虚假目标方位向误差/m	0.276	0.276	0.276	0.109	0.109	0.109	-0.224	-0.224	-0.224
	0.776	0.276	0.776	0.442	0.109	0.442	0.776	0.276	0.776
	0.109	0.109	0.109	0.109	0.109	0.109	0.109	0.109	0.109
虚假目标方位向IRW/m	1.319	1.251	1.294	1.319	1.237	1.333	1.346	1.226	1.313
	1.338	1.251	1.280	1.287	1.239	1.286	1.345	1.215	1.286
	1.041	1.099	1.049	1.099	1.003	1.095	1.086	1.091	1.086
虚假目标方位向PSLR/dB	-13.297	-12.986	-12.149	-12.966	-13.032	-12.857	-11.481	-12.320	-12.404
	-13.177	-12.998	-13.258	-12.976	-13.115	-11.287	-11.917	-12.401	-12.588
	-13.428	-13.047	-13.275	-12.845	-13.141	-12.921	-12.549	-12.396	-12.229
虚假目标方位向ISLR/dB	-9.506	-11.695	-9.803	-11.515	-11.790	-11.835	-9.283	-11.277	-9.823
	-11.957	-11.530	-11.958	-11.086	-11.817	-11.091	-11.028	-11.183	-11.086
	-11.908	-11.711	-11.914	-11.819	-11.899	-11.805	-11.466	-11.373	-11.410

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Study on passive direction-finding and SAR deception jamming method based on multi-receiver cooperation

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