Photonic-assisted radar for simultaneous detection of velocity, distance and angle of arrival of multiple targets

IF 4.6 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-06-09 DOI:10.1016/j.optlastec.2025.113348

Mengmeng Wu , Jianxin Ma

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引用次数: 0

Abstract

A photonic-assisted radar scheme that utilizes a V-shaped Linear Frequency Modulated (LFM) signal to track multiple targets simultaneously is proposed. The de-chirping process is performed by a dual-polarized Mach-Zehnder modulator (Dpol-MZM), with a reference signal frequency shifted by Δf relative to the transmitted signal to achieve the desired signal processing. The symmetry of the beat frequencies of the up-chirp and down-chirp segments can be used to eliminate direction ambiguity and false targets in measurements. By analyzing the beat frequency components, the velocity, distance and angle of arrival (AOA) of multiple targets can be accurately determined. Proof-of-concept experiments have verified the proposed scheme’s capability for multi-target detection by simultaneously tracking three targets at six different positions. The measurement ranges for the Doppler frequency shift (DFS), distance, and AOA are −100 kHz to 100 kHz, 75 m to 750 m, and −90° to 90°, with errors of 0.88 Hz, 0.93 cm, and 1.02°, respectively.

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用于同时探测多个目标的速度、距离和到达角度的光子辅助雷达

提出了一种利用v型线性调频信号同时跟踪多个目标的光子辅助雷达方案。解调过程由双极化马赫-曾德尔调制器（Dpol-MZM）执行，参考信号相对于传输信号的频率移位Δf，以实现所需的信号处理。利用上、下啁啾段拍频的对称性可以消除测量中的方向模糊和假目标。通过分析多目标的拍频分量，可以准确地确定多目标的速度、距离和到达角。概念验证实验通过同时跟踪六个不同位置的三个目标验证了该方案的多目标检测能力。多普勒频移（DFS）测量范围为−100 kHz ~ 100 kHz，距离测量范围为75 m ~ 750 m， AOA测量范围为−90°~ 90°，误差分别为0.88 Hz、0.93 cm和1.02°。

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来源期刊

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems