一种抗间歇采样转发干扰的脉内自适应凹陷LFM波形设计方法

doi:10.12305/j.issn.1001-506X.2025.04.08

系统工程与电子技术 ›› 2025, Vol. 47 ›› Issue (4): 1115-1126.doi: 10.12305/j.issn.1001-506X.2025.04.08

一种抗间歇采样转发干扰的脉内自适应凹陷LFM波形设计方法

史朝鹏¹^,², 吴灏²^,*, 王万田², 朱轩³, 张嘉毫², 孟进², 李强¹

1. 华中科技大学电子信息与通信学院, 湖北武汉 430074
2. 海军工程大学电磁能技术全国重点实验室, 湖北武汉 430033
3. 武汉大学电气与自动化学院, 湖北武汉 430072

收稿日期:2024-01-30 出版日期:2025-04-25 发布日期:2025-05-28
通讯作者: 吴灏
作者简介:史朝鹏 (2000—), 男, 硕士研究生, 主要研究方向为雷达波形设计
吴灏 (1988—), 男, 副研究员, 博士, 主要研究方向为通信信号处理、波形设计
王万田 (1992—), 男, 讲师, 博士, 主要研究方向为雷达目标检测和识别
朱轩 (1996—), 男, 博士研究生, 主要研究方向为雷达干扰检测和识别
张嘉毫 (1990—), 男, 副教授, 博士, 主要研究方向为电磁防护与电磁兼容
孟进 (1977—), 男, 教授, 博士, 主要研究方向为电磁干扰与防护
李强 (1985—), 男, 教授, 博士, 主要研究方向为无线协作通信、物联网
基金资助:
国家自然科学基金(62271497);国家自然科学基金(61801502);国家自然科学基金(62301588);国家自然科学基金(62241111);国家杰出青年基金(52025072)

An intra-pulse adaptive sag LFM waveform design method for anti-interrupted sampling repeater jamming

Zhaopeng SHI¹^,², Hao WU²^,*, Wantian WANG², Xuan ZHU³, Jiahao ZHANG², Jin MENG², Qiang LI¹

1. School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan 430074, China
2. National Key Laboratory of Electromagnetic Energy, Naval University of Engineering, Wuhan 430033, China
3. School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China

Received:2024-01-30 Online:2025-04-25 Published:2025-05-28
Contact: Hao WU

摘要/Abstract

摘要：

间歇采样转发干扰(interrupted sampling repeater jamming, ISRJ)是一种基于欠采样原理的有源相干干扰技术。传统抗ISRJ的波形优化方法存在求解复杂度高、损害传统波形性能等缺陷。基于此，提出一种抗ISRJ的脉内自适应凹陷波形设计方法。首先, 利用干扰时域采样不连续特性, 对原始线性调频(linear frequency modulation, LFM)波形的时域包络进行凹陷设计。随后, 对设计的凹陷位置进行脉内自适应时移寻优, 最终得到具有抗ISRJ效果的波形。所提方法无需复杂的迭代优化, 在不损失原始LFM性能的同时, 能有效利用回波脉压峰值的差异性对ISRJ进行抑制。仿真结果表明, 所设计的波形干扰抑制性能较传统方法有显著提升。

关键词: 电子对抗, 间歇采样转发干扰, 波形设计, 干扰抑制

Abstract:

Interrupted sampling repeater jamming (ISRJ) is a type of active coherent jamming technology based on the principle of down-sampling. The traditional anti-ISRJ waveform optimization method has defects such as high solution complexity and damage to traditional waveform performance. Based on this, an intra-pulse adaptive sag waveform anti-ISRJ design method is proposed. Firstly, the time domain envelope of the original linear frequency modulation (LFM) waveform is designed by using the discontinuous sampling characteristics of the interference time domain. Secondly, the intra-pulse adaptive time shift optimization is performed on the designed sag position. Finally, the waveform with anti-ISRJ effect is obtained. The proposed method does not require complex iterative optimization and can effectively use the difference of echo pulse compression peaks to suppress ISRJ without losing the traditional LFM performance. The simulation results show that the designed waveform interference suppression performance is significantly improved compared with the traditional method.

Key words: electronic countermeasures, interrupted sampling repeater jamming(ISRJ), waveform design, interference suppression

中图分类号:

TN95

史朝鹏, 吴灏, 王万田, 朱轩, 张嘉毫, 孟进, 李强. 一种抗间歇采样转发干扰的脉内自适应凹陷LFM波形设计方法[J]. 系统工程与电子技术, 2025, 47(4): 1115-1126.

Zhaopeng SHI, Hao WU, Wantian WANG, Xuan ZHU, Jiahao ZHANG, Jin MENG, Qiang LI. An intra-pulse adaptive sag LFM waveform design method for anti-interrupted sampling repeater jamming[J]. Systems Engineering and Electronics, 2025, 47(4): 1115-1126.

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参数	数值
脉宽/μs	20
带宽/MHz	20
采样率/MHz	40
目标距离/m	2 000
干扰距离/m	2 150
JSR/dB	15
信噪比(signal-to-noise ratio, SNR)/dB	5

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一种抗间歇采样转发干扰的脉内自适应凹陷LFM波形设计方法

An intra-pulse adaptive sag LFM waveform design method for anti-interrupted sampling repeater jamming

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