Title :
Concept of phase centre of an array applied to elevation-angle measurements
Author_Institution :
Government Communications Headquarters, Cheltenham, UK
fDate :
5/1/1973 12:00:00 AM
Abstract :
A linear receiving array can be regarded as possessing a phase centre the position of which varies with the direction of arrival of the signal. This concept has proved useful in a study of the effects of imperfect ground reflection on elevation-angle measurements made with the wavefront-analysis technique. A distinction is drawn between ground-interference minima and free-space nulls.
Keywords :
antenna phased arrays; antenna theory; electromagnetic wave reflection; loop antennas; receiving antennas; elevation angle measurements; linear receiving array; phase centre; wavefront analysis;
Journal_Title :
Electrical Engineers, Proceedings of the Institution of
DOI :
10.1049/piee.1973.0114
