基于距离-多普勒补偿的多基雷达协同抗主瓣压制干扰

胡勤振; 杨建宇; 吴良斌; 高超; 路成军

doi:10.11999/JEIT200229

基于距离-多普勒补偿的多基雷达协同抗主瓣压制干扰

doi: 10.11999/JEIT200229

胡勤振^{1, 2},
杨建宇^1, ,,
吴良斌²,
高超²,
路成军²

1.
电子科技大学信息与通信工程学院成都 611731
2.
中国航空工业集团公司雷华电子技术研究所无锡 214063

基金项目: 中国博士后科学基金(2019M651993)

详细信息

作者简介:
胡勤振：男，1988年生，博士生，研究方向为雷达探测与抗干扰

杨建宇：男，1963年生，教授，研究方向为新体制雷达探测与成像技术

吴良斌：男，1965年生，研究员，研究方向为机载雷达系统设计

高超：女，1986年生，高级工程师，研究方向为雷达抗干扰技术

路成军：男，1985年生，博士生，研究方向为阵列信号处理

通讯作者:
杨建军　jyyang@uestc.edu.cn

中图分类号: TN974
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- 文章访问数: 1918
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- 被引次数: 0
出版历程
- 收稿日期: 2020-04-03
- 修回日期: 2020-10-26
- 网络出版日期: 2020-10-29
- 刊出日期: 2021-03-22

Main-lobe Suppression Jamming Cancellation for Multistatic Radar Based on Range-Doppler Bias Offsetting

1.
School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
2.
AVIC Leihua Electronic Technology Research Institute, Wuxi 214063, China

Funds: China Postdoctoral Science Foundation (2019M651993)

摘要

摘要: 针对多基地雷达系统中多普勒频差导致干扰信号的去相关的问题，该文提出一种基于距离-多普勒补偿的多基雷达协同抗主瓣压制干扰方法。首先，通过不同雷达平台接收到的干扰信号的互相关函数，分析了多普勒频差对多平台干扰信号的相关性影响。其次，通过最大化时间-多普勒2维相关函数对传播延时差与多普勒频差进行估计和补偿，实现主瓣干扰抑制。然后，为了降低运算量，先利用幅度相关估计出传播延时差，再估计出多普勒频差。仿真结果表明，通过多普勒频率补偿后进行干扰信号级相消处理，可有效抑制主瓣压制干扰。
- 多基地雷达 /
- 主瓣压制干扰 /
- 多普勒频差 /
- 相关
Abstract: To solve the de-correlation problem due to Doppler frequency bias for multistatic radar system, a main-lobe jamming suppression algorithm for multistatic radar based on range-Doppler bias offsetting is proposed. First, based on the cross correlation function of jamming signals of different radars, the effect of Doppler frequency bias on the cross correlation function is analyzed. Then, the time delay and Doppler frequency bias can be estimated and offset by maximizing the two dimensional correlation function of time and frequency, in order to suppress the jamming. What’s more, to reduce the amount of calculation, the time delay can be obtained firstly by cross correlation function of signal amplitude before estimating the Doppler frequency bias. Simulation results illustrate that the jamming can be suppressed effectively after offsetting the Doppler frequency bias and signal cancellation processing.
- Multistatic radar /
- Main-lobe suppression jamming /
- Doppler frequency bias /
- Correlation

HTML全文

图 1 多基雷达协同抗压制干扰场景

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图 2 回波信号数值仿真

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图 3 多普勒频差对同源干扰信号的相关特性分析

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图 4 传播延时差和多普勒频差联合估计

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图 5 基于幅度相关的传播延时差和多普勒频差联合估计

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图 6 平台1干扰抑制后回波功率

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图 7 速度偏差对输出信噪比影响

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图 8 速度估计偏差分析

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