A Novel Jamming Method Based on Micro-Doppler Modulation and Electromagnetic Meta-Materials

IF 1.4 4区 管理学 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Guikun Liu, Honglin Li, Feng Ming, Liang Li, Jingwen Mou, Chen Song, Zhengshuai Li, Peng Wang
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引用次数: 0

Abstract

The rotating corner reflector is widely used in passive jamming methods because of its micro-Doppler modulation effect on the echo signal of synthetic aperture radar. Nevertheless, the traditional methods based on this have problems of single jamming effect and limited jamming range, which are gradually unable to adapt to the increasingly complex electromagnetic countermeasure environment. Therefore, it is of great significance to optimise and improve this to achieve more abundant jamming effects. With the development of material technology, the electromagnetic meta-materials can realise the intra-pulse modulation of radar signals. Thus, a novel jamming method based on the uniform acceleration or deceleration rotating corner reflector and the periodic pulse modulation electromagnetic meta-material is proposed in this paper. Through changing the modulation parameters of proposed jamming model, four different types of jamming effects can be achieved and regulated flexibly. The imaging characteristics of proposed jamming model and the regulation effects of jamming parameters are analysed, respectively. Then, the simulation experiments are performed using the original echo data of airborne SAR system and the simulation results verify the correctness of theoretical analysis. Finally, the prototype design of proposed jamming model and the practical feasibility analysis are given, respectively, which can provide support for the subsequent engineering implementation.

Abstract Image

基于微多普勒调制和电磁超材料的新型干扰方法
旋转角反射器对合成孔径雷达回波信号具有微多普勒调制作用,在无源干扰中得到了广泛的应用。然而,基于此的传统方法存在干扰效果单一、干扰范围有限的问题,逐渐无法适应日益复杂的电磁对抗环境。因此,对其进行优化和改进以获得更丰富的干扰效果具有重要意义。随着材料技术的发展,电磁超材料可以实现雷达信号的脉冲内调制。因此,本文提出了一种基于均匀加减速旋转角反射器和周期脉冲调制电磁超材料的新型干扰方法。通过改变所提出的干扰模型的调制参数,可以实现四种不同类型的干扰效果,并可灵活调节。分析了该干扰模型的成像特性和干扰参数的调节作用。然后利用机载SAR系统的原始回波数据进行了仿真实验,仿真结果验证了理论分析的正确性。最后,给出了所提出的干扰模型的原型设计和实际可行性分析,为后续的工程实施提供支持。
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来源期刊
Iet Radar Sonar and Navigation
Iet Radar Sonar and Navigation 工程技术-电信学
CiteScore
4.10
自引率
11.80%
发文量
137
审稿时长
3.4 months
期刊介绍: IET Radar, Sonar & Navigation covers the theory and practice of systems and signals for radar, sonar, radiolocation, navigation, and surveillance purposes, in aerospace and terrestrial applications. Examples include advances in waveform design, clutter and detection, electronic warfare, adaptive array and superresolution methods, tracking algorithms, synthetic aperture, and target recognition techniques.
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