Dual-function measurement system for Doppler-frequency-shift and angle-of-arrival of microwave signals

Hongshi Zhao; Yanting Guo; Jianxin Ma

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Dual-function measurement system for Doppler-frequency-shift and angle-of-arrival of microwave signals

机译：Dual-function measurement system for Doppler-frequency-shift and angle-of-arrival of microwave signals

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摘要

A photonic method for simultaneously measuring the Doppler frequency shift (DFS) and angle of arrival (AOA) of microwave signal is proposed and verified by simulation. The echo signals are applied to a dual-parallel dual-drive Mach-Zehnder modulator for modulating the lightwave with carrier-suppressed double-sideband pattern. The lightwave carrying the echo signals is coupled with the lightwave carrying the local oscillator signal, and their upper and lower sidebands are separated by an interleaver. Then, the optical signals are converted into low-frequency electrical signals by two identical photodiodes, and the parameters of DFS and AOA are obtained by processing two low-frequency photocurrents. In the simulation, the measurements of the DFSs in the range of ±1 MHz with errors <±9 × 10~(-4) Hz and the AOAs from 1.82 deg to 90 deg with errors <0.9 deg are realized, and the orientation of DFS can also be distinguished by comparing the phase difference of two electrical signals.

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来源
《Optical Engineering》 |2021年第11期|114105-1-114105-11|共11页
作者
Hongshi Zhao; Yanting Guo; Jianxin Ma;
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作者单位

Beijing University of Posts and Telecommunications, School of Electronic Engineering, State Key Laboratory of Information Photonics and Optical Communications, Beijing Key Laboratory of Space-Ground Interconnection and Convergence, Beijing, China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类计量学;
关键词
dual-parallel dual-drive Mach-Zehnder modulator; microwave photonics; Doppler frequency shift measurement; angle-of-arrival measurement;

Dual-function measurement system for Doppler-frequency-shift and angle-of-arrival of microwave signals

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