Title :
An Application of Walsh Functions in Radio Astronomy Instrumentation
Author :
Granlund, J. ; Thompson, A.R. ; Clark, B.G.
Author_Institution :
National Radio Astronomy Observatory, Edgemont Road, Charlottesville, VA 22901
Abstract :
Walsh functions can be used to advantage to perform phase switching in antenna arrays used for radio mapping of the sky by Fourier synthesis. This paper describes the reason for phase switching, the advantage of using Walsh functions, and the implementation of these ideas in the Very Large Array (VLA) program of the National Radio Astronomy Observatory.1
Keywords :
Antenna arrays; Antenna measurements; Delay effects; Instruments; Observatories; Phased arrays; Radio astronomy; Receiving antennas; Signal processing; Signal synthesis;
Journal_Title :
Electromagnetic Compatibility, IEEE Transactions on
DOI :
10.1109/TEMC.1978.303678
