A beamforming approach to the self-calibration of phased arrays
Instrumentation and Methods for Astrophysics
2020-05-26 v1 Signal Processing
Abstract
In this paper, we propose a beamforming method for the calibration of the direction-independent gain of the analog chains of aperture arrays. The gain estimates are obtained by cross-correlating the output voltage of each antenna with a voltage beamformed using the other antennas of the array. When the beamforming weights are equal to the average cross-correlated power, a relation is drawn with the StEFCal algorithm. An example illustrates this approach for few point sources and a 256-element array.
Keywords
Cite
@article{arxiv.2005.11712,
title = {A beamforming approach to the self-calibration of phased arrays},
author = {Quentin Gueuning and Antony Brown and Christophe Craeye and Eloy de Lera Acedo},
journal= {arXiv preprint arXiv:2005.11712},
year = {2020}
}