系统工程与电子技术 ›› 2026, Vol. 48 ›› Issue (1): 106-118.doi: 10.12305/j.issn.1001-506X.2026.01.11

• 传感器与信号处理 • 上一篇    下一篇

基于时频域行聚类的抗间歇采样转发干扰方法

钟琦(), 魏绍仁, 贺志毅, 刘建欣   

  1. 北京遥感设备研究所,北京 100854
  • 收稿日期:2024-08-15 出版日期:2026-01-25 发布日期:2026-02-11
  • 通讯作者: 钟琦 E-mail:zhongqi5928@163.com
  • 作者简介:魏绍仁(1976—),男,研究员,博士研究生,主要研究方向为雷达系统设计
    贺志毅(1961—),男,研究员,博士,主要研究方向为雷达系统设计
    刘建欣(1979—),男,高级工程师,本科,主要研究方向为雷达系统设计

Anti-interrupted sampling repeater jamming method based on row-clustering in time-frequency domain

Qi ZHONG(), Shaoren WEI, Zhiyi HE, Jianxin LIU   

  1. Beijing Institute of Remote Sensing Equipment,Beijing 100854,China
  • Received:2024-08-15 Online:2026-01-25 Published:2026-02-11
  • Contact: Qi ZHONG E-mail:zhongqi5928@163.com

摘要:

为进行间歇采样转发干扰抑制与识别,提出一种行聚类的方法,提取目标回波和干扰信号在时频域中分布的差异。首先,对匹配滤波之后的接收信号进行短时傅里叶变换获得信号的时频域分布。然后,对经过门限判决的时频域信息的频率维进行聚类以获得不同时域采样点上信号的带宽信息。根据获得的带宽信息判断此时域采样点中是否包含间歇采样转发干扰。最后,利用干扰识别结果构造时频域滤波器实现干扰抑制。仿真结果表明,经所提方法处理后,含有干扰的雷达接收信号的信干比得到显著提升,所提方法对间歇采样转发干扰具有良好的抑制效果。

关键词: 间歇采样转发干扰, 短时傅里叶变换, 聚类, 干扰抑制

Abstract:

To suppress interrupted sampling repeater jamming, a row clustering method is proposed, which exploits the differences in the time-frequency distributions between the target echo and the jamming signal. First, the short-time Fourier transform is applied to the received signal after matched filtering to obtain its time-frequency representation. Then, clustering is performed along the frequency dimension of the threshold-processed time-frequency data to extract the signal bandwidth information at different time-domain sampling points. Based on the obtained bandwidth characteristics, it is determined whether interrupted sampling repeater jamming is present in a given time-domain sample. Finally, a time-frequency filter is constructed by using the jamming identification results to suppress the interference. Simulation results demonstrate that the signal-to-interference ratio of the radar received signal contaminated by jamming is significantly improved after processing with the proposed method, validating its effectiveness in suppressing interrupted sampling repeater jamming.

Key words: interrupted sampling repeater jamming, short-time Fourier transform, clustering, interference suppression

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