间歇非均匀采样转发干扰产生方法研究

doi:10.3969/j.issn.1001-506X.2021.01.01

摘要/Abstract

摘要：

间歇采样转发干扰(interrupted sampling repeater jamming, ISRJ)在接收端匹配滤波后会产生相干假目标群,但是这些假目标在距离和幅度上都呈现出很强的规律性。针对这一问题,依据每一个采样子波形的理论脉压结果,采用间歇非均匀的采样和不定量的转发破坏假目标在脉压后的规律性,使其能在较大范围内形成压制效果,并使用禁忌搜索算法对每一个干扰采样信号的脉冲宽度和转发次数进行优化求解。仿真分析了不同信号参数和禁忌搜索算法中的不同权值对干扰效果的影响,并从脉压前后的平均功率、脉压结果的过门限概率以及脉压前后干扰信号和目标信号的循环相关系数等3个方面将传统的产生干扰方法和本文所提的方法进行对比,证明了所提方法的有效性。

关键词: 间歇采样转发干扰, 间歇非均匀采样, 压制式干扰, 干扰产生, 禁忌搜索

Abstract:

The interrupted sampling repeater jamming (ISRJ) can generate coherent spurious target groups after matching filter at the receiving end, while these false targets always show strong regularity in range and amplitude. To solve this problem, based on the pulse compression result of the each sampled sub-waveform, the way of interrupted non-uniform sampling and non-quantitative forwarding is used to break the regularity after pulse compression and makes it form a suppressive effect over a large distance, and the pulse width and the repeater number of each jamming sampling signal is optimized and solved using the algorithm of tabu search. The simulation experiments analyze the impact of different signal parameters and different weight pair in the tabu search algorithm on interference effect, and compare the traditional method with the proposed method from three aspects, the average power before and after pulse compression, the probability of over threshold in pulse compression result, the cycle correlation coefficient of jamming signal and target signal before and after pulse compression, which verifies the effectiveness of the proposed method.

Key words: interrupted sampling repeater jamming (ISRJ), interrupted non-uniform sampling, suppressive jamming, jamming generation, tabu search

中图分类号:

TN974

吴传章, 陈伯孝. 间歇非均匀采样转发干扰产生方法研究[J]. 系统工程与电子技术, 2021, 43(1): 1-10.

Chuanzhang WU, Baixiao CHEN. Study on generating method of interrupted non-uniform sampling repeater jamming[J]. Systems Engineering and Electronics, 2021, 43(1): 1-10.

图/表 16

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图10

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图13

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参数	数值
带宽B/MHz	5
时宽T/μs	50
采样频率/MHz	10
禁忌长度L	40
邻域解个数C_a	400
迭代次数G	500

图	最优解
图8(b)	[9, 4, 4, 3, 6;7.4, 2.1, 1, 1.3, 0.9]
图8(c)	[3, 3, 1, 1, 9;0.5, 0.5, 0.5, 0.5, 14.4]
图9(b)	[1, 3, 9, 8, 4;0.7, 0.4, 4.25, 0.35, 0.35]
图9(c)	[9, 1, 9, 1, 1;3.45, 0.375, 0.225, 3.125, 3.2]

图	第一对	第三对
图10(a)	[4, 9, 7, 1, 4;0.5, 3.9, 0.5, 0.5, 0.9]	[2, 6, 9, 2, 4;0.5, 0.5, 4, 0.5, 0.9]
图10(b)	[1, 9, 5, 3, 3;0.5, 4.2, 0.5, 0.5, 0.7]	[2, 1, 2, 7, 8;0.6, 7.9, 7.9, 0.5, 0.5]

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