A photonic assisted radar integrated communication system based on gain switched VCSEL

IF 3.1 3区物理与天体物理 Q2 Engineering

Optik Pub Date : 2025-07-08 DOI:10.1016/j.ijleo.2025.172478

Anu Sam, M. Ganesh Madhan

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引用次数: 0

Abstract

A photonic assisted radar utilizing multiband linearly frequency modulated (LFM) signal with increased bandwidth, combined with FSK data transmission is proposed in this work. In this scheme, gain switched vertical cavity surface emitting laser (VCSEL) is exploited to generate multiband LFM radar signal, when a baseband LFM signal is given as input. Simulation results verified the generation of multiband LFM signals at 5 GHz, 10 GHz, 15 GHz and 20 GHz, with bandwidth of 600 MHz, 1200 MHz, 1800 MHz and 2400 MHz, respectively for 5 GHz LFM input. The LFM frequency bands and their bandwidth are increased N times with respect to the baseband LFM signal. The time bandwidth product reaches a maximum value of 38400 with a range of resolution of 7.5 cm. The radar unambiguous range of 2 targets is estimated as 7.8 m and 7.95 m respectively. The maximum target detection distance is found to be 2.25 km.The demodulation of LFM-FSK signal is demonstrated and achieved a maximum capacity of 100 Mbps. The integrated LFM-FSK signal has the benefit of high immunity towards interference, reduced range ambiguity and finds application in automotive radars, short range tracking, missile guidance and radar networks.

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基于增益切换VCSEL的光子辅助雷达综合通信系统

本文提出了一种利用频宽增加的多波段线性调频（LFM）信号，结合FSK数据传输的光子辅助雷达。该方案利用增益开关垂直腔面发射激光器（VCSEL），以基带LFM信号为输入，产生多波段LFM雷达信号。仿真结果验证了线性调频脉冲信号的生成多波段5 GHz, 10 GHz, 15 GHz和20 GHz, 600 MHz带宽,1200 MHz,分别 1800 MHz和2400 MHz 5线性调频脉冲输入 GHz。LFM频段及其带宽相对于基带LFM信号增加N倍。时间带宽乘积达到最大值38400，分辨率范围为7.5 cm。雷达对2个目标的无二义距离估计分别为7.8 m和7.95 m。最大目标探测距离为2.25 km。演示了LFM-FSK信号的解调，并实现了100 Mbps的最大容量。综合LFM-FSK信号具有抗干扰能力强、距离模糊度低的优点，可应用于汽车雷达、近程跟踪、导弹制导和雷达网络。

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

Optik 物理-光学

CiteScore

6.90

自引率

12.90%

发文量

1471

审稿时长

46 days

期刊介绍： Optik publishes articles on all subjects related to light and electron optics and offers a survey on the state of research and technical development within the following fields: Optics: -Optics design, geometrical and beam optics, wave optics- Optical and micro-optical components, diffractive optics, devices and systems- Photoelectric and optoelectronic devices- Optical properties of materials, nonlinear optics, wave propagation and transmission in homogeneous and inhomogeneous materials- Information optics, image formation and processing, holographic techniques, microscopes and spectrometer techniques, and image analysis- Optical testing and measuring techniques- Optical communication and computing- Physiological optics- As well as other related topics.