Range-Azimuth Decouple Microwave Coincidence Imaging Based on a Frequency-Diverse Bunching Metasurface Antenna

被引：0
|
作者：
Nian, Yiheng [1 ]
Zhao, Mengran [2 ]
Tao, Xinyu [1 ]
Zhu, Shitao [1 ]
Li, Die [1 ]
Zhang, Ming [1 ]
Zhang, Anxue [1 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Elect & Informat Engn, Xian 710049, Peoples R China
[2] Queens Univ Belfast, Ctr Wireless Innovat, Sch Elect Elect Engn & Comp Sci, Belfast BT3 9DT, North Ireland
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2024年 / 23卷 / 11期
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
Imaging; Azimuth; Antenna radiation patterns; Metasurfaces; Image reconstruction; Frequency modulation; Image resolution; Frequency-diverse bunching metasurface antenna (FDBMA); microwave coincidence imaging (MCI); range-azimuth decouple algorithm (RADA); superresolved; APERTURES;
D O I：
10.1109/LAWP.2024.3412230
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：
To obtain the range and azimuth information of the target in a frequency-diverse bunching metasurface antenna (FDBMA)-based microwave coincidence imaging (MCI) system, a range-azimuth decouple algorithm (RADA) is proposed in this letter. First, an FDBMA comprising a double-layer rectangular waveguide feeding structure, a randomly modulated metasurface, and a parabolic reflector is proposed. Various radiation patterns can be generated at 134 sampling frequency points from 22 GHz to 26 GHz with an interval of 30 MHz. Then, a three-step imaging method, namely, the RADA, is proposed to retrieve the range and azimuth information of the target sequentially. Finally, by applying the RADA in an FDBMA-based MCI, the superresolved target image is reconstructed. The proposed FDBMA and RADA are validated through full-wave simulations.
引用
收藏
页码：3397 / 3401
页数：5
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