Antenna Phase Center Analysis for the LOFAR Radio Telescope

被引：0
|
作者：
Di Ninni, P. [1 ]
Bolli, P. [1 ]
Nesti, R. [1 ]
Virone, G. [2 ]
Pupillo, G. [3 ]
Wijnholds, S. J. [4 ]
机构：
[1] INAF, Osservatorio Astrofis Arcetri, Largo Enrico Fermi 5, I-50125 Florence, Italy
[2] CNR, Ist Elettron Ingn Informaz & Telecomunicaz, C So Duca Abruzzi 24, I-10129 Turin, Italy
[3] INAF, Ist Radioastron, Via Gobetti 101, I-40129 Bologna, Italy
[4] ASTRON, R&D Dept, Oude Hoogeveensedijk 4, NL-7991 PD Dwingeloo, Netherlands
来源：
2019 IEEE INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION AND USNC-URSI RADIO SCIENCE MEETING | 2019年
关键词：
Low-frequency aperture array; antenna phase center; embedded element pattern; radio astronomy;
D O I：
10.1109/apusncursinrsm.2019.8888745
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：
Knowledge of the phase centers of the constituting antennas is important to obtain an accurate array response. This contribution shows an analysis of the antenna phase centers for a station of the Low Frequency Array (LOFAR) radio telescope. Based on simulated patterns, the positions of the phase centers for 46 antennas have been computed at 32 MHz showing considerable deviations from their physical positions due to mutual coupling. The flatness of the phase patterns significantly improves when the phase center is considered.
引用
收藏
页码：405 / 406
页数：2
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