BEAMFORMER DESIGN FOR RADIO ASTRONOMICAL PHASED ARRAY FEEDS

被引：6

作者：

Elmer, Michael ^{[1
]}

Jeffs, Brian D. ^{[1
]}

机构：

[1] Brigham Young Univ, Dept Elect & Comp Engn, Provo, UT 84602 USA

来源：

2010 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING | 2010年

关键词：

Antenna array feeds; Array signal processing; Radio astronomy; Phased arrays;

D O I：

10.1109/ICASSP.2010.5496212

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

A major research emphasis in current radio astronomy instrument development is the use of phased array feeds (PAF) to provide radio telescopes with larger fields of view. Statistically optimal beamformers have been shown to provide high sensitivity for PAFs, however, inability to precisely control beampattern details (even in sidelobes) is problematic. Enforcing beampattern structure with a deterministic beam-former is useful. A hybrid beamforming approach is presented in this paper, which offers the best in sensitivity for a desired amount of beampattern control. Designing any beamformer with simulated calibration data is inadequate for PAF operation and introduces distortion in the final beampattern. A transformation step is required to reduce such effects.

引用

页码：2790 / 2793

页数：4

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