Range-azimuth decouple microwave coincidence imaging based on a frequency-diverse bunching metasurface antenna

Yiheng Nian, Mengran Zhao, Xinyu Tao, Shitao Zhu*, Die Li, Ming Zhang, Anxue Zhang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

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. Firstly, a 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 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 a FDBMA-based MCI, the super-resolved target image is reconstructed. The proposed FDBMA and RADA are validated through full-wave simulations.

Original languageEnglish
Number of pages5
JournalIEEE Antennas and Wireless Propagation Letters
Early online date11 Jun 2024
DOIs
Publication statusEarly online date - 11 Jun 2024

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