基于双站幅度调制的虚假运动场景对SAR-GMTI的欺骗方法

畅鑫; 董春曦; 唐峥钊; 董阳阳; 刘明明

doi:10.11999/JEIT171202

基于双站幅度调制的虚假运动场景对SAR-GMTI的欺骗方法

doi: 10.11999/JEIT171202

西安电子科技大学电子工程学院西安 710071

基金项目: 国家973项目(61**81**)

详细信息

作者简介:
畅鑫：男，1990年生，博士生，研究方向为电子对抗技术和电子战系统仿真

董春曦：男，1970年生，副教授，博士生导师，主要研究方向为电子对抗技术和电子战系统仿真

唐峥钊：男，1991年生，博士生，研究方向为逆合成孔径雷达对抗技术

董阳阳：男，1991年生，博士生，研究方向为阵列信号处理和电子侦察信号处理

刘明明：女，1989年生，博士生，研究方向为阵列信号处理和图像去噪

通讯作者:
董春曦　 chxdong@mail.xidian.edu.cn

中图分类号: TN974
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- 被引次数: 0
出版历程
- 收稿日期: 2017-12-21
- 修回日期: 2018-06-04
- 网络出版日期: 2018-07-12
- 刊出日期: 2018-09-01

False Moving Scene Jamming Method Based on Double Jammers and Magnitude Modulation Against SAR-GMTI

School of Electronic Engineering, Xidian University, Xi’an 710071, China

Funds: The National 973 Program of China (61**81**)

摘要

摘要: 为了产生方位向初始位置和幅度可控的虚假运动场景，该文提出针对合成孔径雷达动目标显示(SAR-GMTI)的双干扰机幅度调制的虚假场景欺骗算法。双干扰机分别通过移频和延迟在指定位置产生相同的虚假运动场景。设置幅度比控制两幅虚假场景叠加后产生的各点的相位，达到初始方位向位置可控的目的。理论分析表明算法能够在指定位置产生初始方位向位置和幅度可控的虚假运动场景。然后分析了干扰效果和影响因素，建立了干扰算法的应用模型，给出了虚假运动场景的成像位置、方位向初始位置和幅度补偿系数的设置方法，并讨论了双站沿方位向间距对算法的影响。最后，仿真实验验证了算法的有效性。
- SAR地面动目标显示 /
- 双干扰机 /
- 场景欺骗 /
- 虚假运动目标
Abstract: To control the initial azimuth position and the magnitude of the false moving scene, a false moving scene jamming method against Synthetic Aperture Radar-Ground Moving Target Indication (SAR-GMTI) is proposed based on double jammers and magnitude modulation. The identical false scenes can be generated in the desired position by the two jammers using delay and shift-frequency modulation. To control the initial azimuth position of the false moving scene, the magnitude ratio of the double scenes are set by controlling the phase of each false target which is generated after two false scenes are superimposed. Theoretical analysis shows that the false moving scene can be generated with the initial azimuth position and magnitude controllable. Next, the jamming effects and influencing factors are analyzed, and the application model of interference algorithm is established. Subsequently, the setting methods of the imaging position, the initial azimuth position and the magnitude compensation coefficient are presented. The jamming effect of the distance between the two jammers in azimuth is also analyzed. Finally, the validity of the proposed method is verified by simulation experiences.
- Synthetic Aperture Radar-Ground Moving Target Indication (SAR-GMTI) /
- Double jammers /
- False scene jamming /
- False moving target

HTML全文

图 1 单干扰机场景欺骗调制模板

下载: 全尺寸图片幻灯片

图 2 三孔径干涉算法流程

下载: 全尺寸图片幻灯片

图 3 单干扰机欺骗场景

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图 4 双干扰机场景欺骗场景

下载: 全尺寸图片幻灯片

图 5 双干扰机虚假场景模板欺骗示意图

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图 6 算法应用模型

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图 7 单站虚假运动目标干扰效果

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图 8 双站虚假运动目标干扰效果

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图 9 干扰效果对比

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表 1 三通道干涉仿真参数

参数	数值
信号载频(GHz)	10
信号脉宽(μs)	20
信号带宽(MHz)	200
脉冲重复频率(Hz)	1365
载机航速(m/s)	200
航迹高度(m)	5000
合成孔径时间(s)	0.88
天线间距(m)	0.25

下载: 导出CSV

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