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Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
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多带微波光子雷达具有增加目标检测能力的多带微波雷达.

Jinxin Li, Yuhang Xie, Jianghai Wo

    Optics letters
    |June 13, 2025
    PubMed
    概括

    我们开发了一种新的多频段微波光子雷达,使用光学频率转移循环 (OFSL) 来增强目标检测. 该系统通过结合多个频段来实现卓越的性能,克服了单频段的限制.

    科学领域:

    • 微波光子学 微波光子学
    • 雷达系统工程 雷达系统工程
    • 光学信号处理 视觉信号处理

    背景情况:

    • 单频雷达在检测范围,分辨率和材料透方面面临限制.
    • 多带雷达系统通过利用多种频谱来提供潜在的优势.
    • 对雷达信号生成的光子方法是一个活跃的研究领域.

    研究的目的:

    • 提出和演示一个新的多频段微波光子雷达系统.
    • 通过使用多个频段来增强目标检测能力.
    • 克服单频雷达系统固有的局限性.

    主要方法:

    • 使用光学频率转移循环 (OFSL) 产生回流光学波形.
    • 用线性频率调制 (LFM) 波形调制一个脉冲光学载波器.
    • 通过光学异调产生多频段LFM微波波形并通过天线传输.
    • 在使用参考波形的接收器上采用消音技术.

    主要成果:

    • 对三波段 (C波段,X波段,Ku波段) LFM光子雷达进行实验验证.
    • 实现了1GHz (C频段),2GHz (X频段) 和3GHz (Ku频段) 的瞬间带宽.
    • 测量范围分辨率为15.98厘米 (C频段),8.39厘米 (X频段) 和5.64厘米 (Ku频段).

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    结论:

    • 拟议的多带微波光子雷达显著提高了目标检测能力.
    • 利用多个频段可以减轻单频段的限制,例如材料吸收和分辨率限制.
    • 该系统在检测范围,范围分辨率和可检测性方面提供最佳性能.