Orbital-Angular-Momentum-Based Electromagnetic Vortex Imaging

被引：288

作者：

Liu, Kang ^{[1
]}

Cheng, Yongqiang ^{[1
]}

Yang, Zhaocheng ^{[1
]}

Wang, Hongqiang ^{[1
]}

Qin, Yuliang ^{[1
]}

Li, Xiang ^{[1
]}

机构：

[1] Natl Univ Def Technol, Coll Elect Sci & Engn, Changsha 410073, Hunan, Peoples R China

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2015年 / 14卷

基金：

中国国家自然科学基金;

关键词：

Electromagnetic vortex wave; orbital angular momentum; phase front; uniform circular antenna array;

D O I：

10.1109/LAWP.2014.2376970

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A novel radar imaging technique based on orbital angular momentum (OAM) modulation is presented. First, the generation of electromagnetic (EM) vortex wave, which carries the OAM, using incrementally phased uniform circular array (UCA) is introduced, and factors that affect the phase-front distribution are analyzed. Subsequently, echo signal models of both multiple-in-multiple-out and multiple-in-single-out modes are established. The target images are obtained using the fast Fourier transform (FFT) and back-projection methods. Simulation results demonstrate that orbital angular momentum has the prospect for acquiring the azimuth information of radar target. The signal of both OAM modulation and frequency modulation can be used to obtain two-dimensional radar target image. The work can benefit the development of novel information-rich radar based on orbital angular momentum, as well as radar target recognition.

引用

页码：711 / 714

页数：4

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