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Misalignment Measurement of Orbital Angular Momentum Signal Based on Spectrum Analysis and Image Processing

文献类型：期刊论文

作者Gao, Xinlu1; Song, Xiyao1; Zheng, Zhennan1; Xie, Mutong1,2; Huang, Shanguo1
刊名IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
出版日期2020
卷号68期号:1页码:521-526
关键词Measurement by laser beam Laser beams Antenna measurements Extraterrestrial measurements Image processing Distortion measurement Spectral analysis Antenna radiation patterns dipole radiation image processing misalignment measurement orbital angular momentum (OAM)
ISSN号0018-926X
DOI10.1109/TAP.2019.2938850
英文摘要Misalignment measurement is important in radio frequency orbital angular momentum (RF-OAM)-related communication and radar applications. Misalignment causes distorted vortex wavefront and OAM spectra dispersion, therefore a conventional gradient method cannot be used directly. We propose a misaligned measurement method for RF-vortex beams based on image processing. Theoretical analysis and numerical simulations of the misaligned OAM wavefront demonstrate that the misalignment information can be measured by extracting the features of the OAM mean value distribution and the OAM variance value distribution. It is found in this paper that the extrema of mean OAM distribution and OAM variance distribution correspond to the tilted singularity point and original pivot point, separately. These extrema points can be found by image processing algorithms that recognize round speckles. A proof-of-concept experiment is presented, which employs a 2-D scanning probe to measure a 10-tilted OAM beam with mode 1. The tilt measurement error is only 0.39.
资助项目National Natural Science Foundation of China (NSFC)[61690195] ; National Natural Science Foundation of China (NSFC)[61605015] ; National Natural Science Foundation of China (NSFC)[61575028] ; National Natural Science Foundation of China (NSFC)[61801038] ; National Natural Science Foundation of China (NSFC)[61622102] ; National Natural Science Foundation of China (NSFC)[61821001]
WOS研究方向Engineering ; Telecommunications
语种英语
WOS记录号WOS:000507301000050
出版者IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
源URL[http://119.78.100.204/handle/2XEOYT63/15020]  
专题中国科学院计算技术研究所期刊论文_英文
通讯作者Xie, Mutong; Huang, Shanguo
作者单位1.Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China
2.Chinese Acad Sci, Inst Comp Technol, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Gao, Xinlu,Song, Xiyao,Zheng, Zhennan,et al. Misalignment Measurement of Orbital Angular Momentum Signal Based on Spectrum Analysis and Image Processing[J]. IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION,2020,68(1):521-526.
APA Gao, Xinlu,Song, Xiyao,Zheng, Zhennan,Xie, Mutong,&Huang, Shanguo.(2020).Misalignment Measurement of Orbital Angular Momentum Signal Based on Spectrum Analysis and Image Processing.IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION,68(1),521-526.
MLA Gao, Xinlu,et al."Misalignment Measurement of Orbital Angular Momentum Signal Based on Spectrum Analysis and Image Processing".IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION 68.1(2020):521-526.

入库方式： OAI收割

来源：计算技术研究所

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