Photonics-based broadband radar target simulator for generating micro-Doppler signatures.

IF 3.1 2区物理与天体物理 Q2 OPTICS

Optics letters Pub Date : 2025-06-15 DOI:10.1364/OL.565322

Yunlu Xing, Shangyuan Li, Xiaoxiao Xue, Xiaoping Zheng

引用次数: 0

Abstract

Micro-Doppler (MD) signatures provide radar systems with an additional dimension, significantly enhancing their capabilities in target detection and identification. However, there is currently a lack of broadband radar target simulators (RTSs) capable of generating MD signatures. To address this issue, this paper proposes a photonics-based RTS. The emitted signal from the radar under test (RUT) is modulated onto a broadband optical source. The optical spectra are then tailored to simulate micro-motions. Through frequency-to-time mapping, the optical spectra are converted into simulated echoes, allowing the generation of MD signatures. In the experiment, X-band radar signals with 4 GHz bandwidth are processed, and MD signatures corresponding to human walking and bird flight are successfully generated.

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用于产生微多普勒特征的光子学宽带雷达目标模拟器。

微多普勒（MD）信号为雷达系统提供了额外的维度，显著提高了其目标探测和识别能力。然而，目前缺乏能够产生MD特征的宽带雷达目标模拟器（rts）。为了解决这一问题，本文提出了一种基于光子的即时传输系统。被测雷达（RUT）发射的信号被调制到宽带光源上。然后调整光学光谱来模拟微运动。通过频率-时间映射，将光谱转换为模拟回波，从而生成MD特征。在实验中，对4 GHz带宽的x波段雷达信号进行处理，成功生成了人类行走和鸟类飞行对应的MD特征。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optics letters 物理-光学

CiteScore

6.60

自引率

8.30%

发文量

2275

审稿时长

1.7 months

期刊介绍： The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community. Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.