宽带成像雷达间歇采样转发干扰应用策略

高磊; 曾勇虎; 汪连栋; 王伟

doi:10.11884/HPLPB201830.170430

宽带成像雷达间歇采样转发干扰应用策略

doi: 10.11884/HPLPB201830.170430

1.
电子信息系统复杂电磁环境效应国家重点实验室, 河南洛阳 471003
2.
国防科技大学电子科学学院, 长沙 410073

基金项目:

国家自然科学基金项目 61571451

详细信息

作者简介:
高磊(1983－), 男, 博士, 助理研究员, 从事雷达目标散射特性、宽带雷达数据处理研究; ren_lgao@126.com

中图分类号: TN95
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出版历程
- 收稿日期: 2017-11-03
- 修回日期: 2018-01-18
- 刊出日期: 2018-05-15

Application strategy for intermittent sampling repeater jamming to wideband imaging radar

1.
State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System, Luoyang 471003, China
2.
College of Electronic Science, National University of Defense Technology, Changsha 410073, China

摘要

摘要: 间歇采样转发干扰是针对宽带成像雷达的一种新型干扰方式。根据间歇采样转发干扰的基本原理，对宽带成像雷达，按照常规应用策略，能够在高分辨距离像结果中叠加一串虚假散射点。结合成像处理过程可知，这一串虚假散射点在事实上提升了成像处理中包络对齐效果。针对间歇采样转发干扰常规应用策略导致的问题，以破坏包络对齐为目的，设计了一种新的间歇采样转发干扰应用策略：按照预设随机序列改变间歇采样周期，来实现转发干扰方式。通过仿真实验，验证了所提出的应用策略能够显著降低成像质量。
- 间歇采样转发干扰 /
- 成像雷达 /
- 应用策略 /
- 包络对齐
Abstract: Intermittent sampling repeater jamming is a new kind of jamming means to wideband imaging radar. According to the principle of intermittent sampling repeater jamming, under its common application strategy, the jamming can add a string of bogus scatters to high resolution range profile(HRRP) of wideband imaging radar. Combing with process of imaging, it is found that the string of bogus scatters improves the quality of envelope alignment in the process of imaging. In order to solve the problem caused by intermittent sampling repeater jamming under common strategy, a new application strategy for intermittent sampling repeater jamming is put forward, which aims to disturb envelope alignment. In the new application strategy, period of intermittent sampling is changed according to some predefined random sequence. Simulation is executed, and the result shows that the new application strategy can degrade imaging quality obviously.
- intermittent sampling repeater jamming /
- imaging radar /
- application strategy /
- envelope alignment

HTML全文

图 1 存在干扰情况下的ISAR成像观测模型

Figure 1. Observation model for inverse synthetic aperture radar(ISAR) imaging when jamming exists

下载: 全尺寸图片幻灯片

图 2 目标散射点模型与无干扰情况下成像结果

Figure 2. Scatter model of target and its imaging result when no jamming exists

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图 3 常规干扰策略下成像处理结果

Figure 3. Imaging results when normal jamming strategy was applied

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图 4 变采样周期策略下成像处理结果

Figure 4. Imaging results when changing sampling period strategy was applied

下载: 全尺寸图片幻灯片

图 5 两种干扰策略下高分辨距离像包络相邻相关系数序列对比

Figure 5. Comparison of correlation coefficient for adjacent HRRP under two jamming strategies

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表 1 雷达工作信号参数

Table 1. Parameters for radar signal

carrier frequency/GHz	bandwidth/GHz	pulse duration/μs	pulse repetition frequency/Hz	accumulation time/s
10	1	10	500	2.56

下载: 导出CSV

表 2 干扰信号参数

Table 2. Parameters for jamming signal

duration time of sampling pulse/μs	period of intermittent sampling signal/μs	intermittent sampling duty ratio	amplitude of intermittent sampling signal
0.03	0.1	0.3	7

下载: 导出CSV

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