非均匀间歇采样转发干扰对脉内捷变雷达影响分析

doi:10.12305/j.issn.1001-506X.2024.05.09

Abstract

Abstract:

Intra-pulse frequency agile radar can effectively suppress interrupted sampling repeater jamming by its own "active" anti-jamming characteristics, taking advantage of the discontinuity and periodicity of traditional interrupted sampling repeater jamming, and combining with anti-jamming algorithms. In order to improve the jamming efficiency of the jammer against the intra-pulse frequency agile radar, this paper proposes to use the non-uniform interrupted sampling repeater jamming to jam the intra-pulse frequency agile radar. First, the intercepted intra-pulse frequency agile radar signal is estimated by time-frequency ridge extraction and wavelet transform to obtain the sub-pulse width, and then the non-uniform interrupted sampling repeater jamming is constructed according to the sub-pulse width constraint jamming parameters. Theoretical analysis and results show that it is difficult to suppress interference in intra-pulse frequency agility radar in time and frequency domain through non-uniform interrupted sampling repeater, which greatly improves the jamming ability of jammer.

Key words: electronic counter, intra-pulse frequency agility, time-frequency ridge line, wavelet transform, non-uniform interrupted sampling repeater jamming, parameters of jamming

CLC Number:

TN972

Zongzheng SUN, Zhixing LIU, Guoyao XIAO, Hanting QI, Yinghui QUAN. Analysis of the influence of non uniform interrupted sampling repeater jamming on intra-pulse agile radar[J]. Systems Engineering and Electronics, 2024, 46(5): 1544-1554.

Figures/Tables 17

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参数	数值	参数	数值
脉冲数N	64	子脉冲数S	4
脉冲重复周期T_r/μs	40	脉内跳频间隔Δ f/MHz	6
中心载频f₀/GHz	14	子脉冲带宽B_s/MHz	6
采样率f_s/MHz	96	子脉冲脉宽T_s/μs	6

参数	数值	参数	数值	参数	数值
m_{1, 1}	59	m_{2, 1}	11	m_{3, 1}	5
m_{1, 2}	74	m_{2, 2}	29	m_{3, 2}	3
m_{1, 3}	119	m_{2, 3}	14	m_{3, 3}	2
m_{1, 4}	99	m_{2, 4}	9	m_{3, 4}	5
τ_{1, 1}	0.1	τ_{2, 1}	0.5	τ_{3, 1}	1
τ_{1, 2}	0.08	τ_{2, 2}	0.2	τ_{3, 2}	1.5
τ_{1, 3}	0.05	τ_{2, 3}	0.4	τ_{3, 3}	2
τ_{1, 4}	0.06	τ_{2, 4}	0.6	τ_{3, 4}	1
τ_1J	0	τ_2J	0	T_3J	0

参数	数值	参数	数值	参数	数值	参数	数值
m_{1, 1}	4	τ_1J	0	m_{3, 1}	3	T_3J	2
m_{1, 2}	3	m_{2, 1}	4	m_{3, 2}	3	m_{4, 1}	5
m_{1, 3}	3	m_{2, 2}	2	m_{3, 3}	2	m_{4, 2}	3
m_{1, 4}	4	m_{2, 3}	5	m_{3, 4}	5	m_{4, 3}	2
τ_{1, 1}	1	τ_{2, 1}	1.5	τ_{3, 1}	1	τ_{4, 1}	1
τ_{1, 2}	2	τ_{2, 2}	2	τ_{3, 2}	1.5	τ_{4, 2}	2
τ_{1, 3}	1.5	τ_{2, 3}	1	τ_{3, 3}	2	τ_{4, 3}	3
τ_{1, 4}	1	τ_2J	4.5	τ_{3, 4}	1	T_4J	0

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Analysis of the influence of non uniform interrupted sampling repeater jamming on intra-pulse agile radar

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