A Wideband LFMCW Radar Jamming System Based on Microwave Photonic Link

IF 4.5 1区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Transactions on Microwave Theory and Techniques Pub Date : 2024-09-18 DOI:10.1109/TMTT.2024.3457163

Shixin Long;Hao Ding;Xinglin Qin;Boqiu Yuan;Qihui Zhou;Song Zha;Mingtuan Lin

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Abstract

In this article, a linear frequency modulation continuous wave (LFMCW) radar range jamming system based on microwave photonic link is proposed and demonstrated, which has a simple structure, wide operation band, and high consistency. The most important part of the system is the microwave photonic phase shifter (MPPS) composed of a Mach-Zehnder modulator (MZM), dc voltage drive module, and photodetector (PD), whose main function is to modulate the LFM signal in time domain with periodic rectangular bias. By periodically configuring the biased voltage of MZM at positive and negative quadrature bias points (

$\pm Q$

), the MPPS can achieve a 180° phase shift of RF signal after PD detection. Subsequently, theoretical analyses and simulations are conducted to show the effective range jamming capability of the time-domain modulated LFM signal on LFMCW radar. Finally, the experiments demonstrate that the MPPS has excellent in-band consistency in 1–10 GHz, and the jamming performance of the system is satisfactory on a commercial X-band LFMCW radar. The proposed system features a wide operational bandwidth and low complexity compared with other jamming systems.

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基于微波光子链路的宽带 LFMCW 雷达干扰系统

本文提出并演示了一种基于微波光子链路的线性调频连续波（LFMCW）雷达距离干扰系统，该系统结构简单、工作频带宽、一致性高。该系统最重要的部分是由Mach-Zehnder调制器（MZM）、直流电压驱动模块和光电探测器（PD）组成的微波光子移相器（MPPS），其主要功能是对LFM信号进行周期性矩形偏置的时域调制。通过周期性地配置MZM在正、负正交偏置点的偏置电压（$\pm Q$）， MPPS可以实现PD检测后RF信号的180°相移。通过理论分析和仿真，验证了时域调制LFM信号在LFMCW雷达上的有效距离干扰能力。实验结果表明，该系统在1 ~ 10ghz波段具有良好的带内一致性，在商用x波段LFMCW雷达上的干扰性能令人满意。与其他干扰系统相比，该系统具有较宽的工作带宽和较低的复杂性。

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来源期刊

IEEE Transactions on Microwave Theory and Techniques 工程技术-工程：电子与电气

CiteScore

8.60

自引率

18.60%

发文量

486

审稿时长

6 months

期刊介绍： The IEEE Transactions on Microwave Theory and Techniques focuses on that part of engineering and theory associated with microwave/millimeter-wave components, devices, circuits, and systems involving the generation, modulation, demodulation, control, transmission, and detection of microwave signals. This includes scientific, technical, and industrial, activities. Microwave theory and techniques relates to electromagnetic waves usually in the frequency region between a few MHz and a THz; other spectral regions and wave types are included within the scope of the Society whenever basic microwave theory and techniques can yield useful results. Generally, this occurs in the theory of wave propagation in structures with dimensions comparable to a wavelength, and in the related techniques for analysis and design.