Enhancing Electromagnetic Backscattering Responses for Target Detection in the Near Zone of Near-Field-Focused Phased Array Antennas

被引：8

作者：

Chou, Hsi-Tseng ^{[1
]}

Gao, Wen-Jin ^{[2
]}

Zhou, Jianhua ^{[2
]}

You, Baiqiang ^{[2
]}

He, Xian-Hui ^{[2
]}

机构：

[1] Natl Taiwan Univ, Grad Inst Commun Engn, Taipei 10617, Taiwan

[2] Xiamen Univ, Natl Model Microelect Coll, Sch Elect Sci & Engn, Xiamen 361005, Peoples R China

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2021年 / 69卷 / 03期

关键词：

Noise measurement; Scattering; Estimation; Object detection; Antenna arrays; Backscatter; array excitation; near-field (NF) focus radiation; radar cross section (RCS); scattering field maximization; steepest ascent method; target detection;

D O I：

10.1109/TAP.2020.3026878

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：

The analysis of electromagnetic (EM) scattering from a target located in the near zone of an electrically large near-field-focused (NFF) array of antennas is presented. The analysis first examined the EM scattering from a metal sphere, attempting to create a reference for comparison with other targets in a fashion analogous to conventional far-field analysis of radar cross section (RCS). Realistic targets were afterward examined and analyzed to exhibit their RCS characteristics. A numerical simulation-based maximization of EM scattering fields for effective target detection in the near zone of antenna was developed, which allows one to obtain a set of optimum element excitation weightings by applying the steepest ascent method (SAM). RCS phenomena were validated by full-wave simulations and experimental measurements to justify the feasibility of the proposed concept.

引用

页码：1658 / 1669

页数：12