https://scholars.lib.ntu.edu.tw/handle/123456789/607116
標題: | Near-Field Orthogonal Beam Scan by Phased Arrays of Antennas with Active Analog Beamformer for Maximum NF-RCS in Target Detection | 作者: | HSI-TSENG CHOU | 關鍵字: | Antenna arrays;Near-field (NF) detection;Radar cross section (RCS);Singular value decomposition (SVD);Target detection;Antenna phased arrays;Directional patterns (antenna);Radar antennas;Radar cross section;Tracking radar;Beam scan;Field detections;Near fields;Near-field detection;Orthogonal beams;Phased-arrays;Radar cross-sections;Singular value decomposition;Targets detection | 公開日期: | 2022 | 卷: | 70 | 期: | 2 | 起(迄)頁: | 1559-1564 | 來源出版物: | IEEE Transactions on Antennas and Propagation | 摘要: | Near-field radar cross section (NF-RCS) of a target depends on antennas' radiation and can be maximized by adjusting the radiation patterns. It is justified by the power return ratio and can be computed by a comparison method. A theoretical foundation of operational mechanism for phased arrays of antennas is presented to produce conformal radiations for NF-RCS enhancement. The target's scattering coefficients are extracted from operating the antenna array's digital phase shifters (DPSs) to steer the resulting beams in this work. The scattering matrix is then analyzed by the singular value decomposition (SVD) to determine the antennas' excitations for maximum NF-RCS with estimation stability. It results in orthogonal beams for the two-way radiations of antenna arrays to interpret the scattering mechanisms. The feasibility is validated by HFSS full-wave simulations and experimental measurement data. ? 1963-2012 IEEE. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85124582357&doi=10.1109%2fTAP.2021.3111484&partnerID=40&md5=bb8ee2ee0bf58f8b483cd45c79d3613d https://scholars.lib.ntu.edu.tw/handle/123456789/607116 |
ISSN: | 0018926X | DOI: | 10.1109/TAP.2021.3111484 |
顯示於: | 電機工程學系 |
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