
%0 Journal Article
%A Bracewell, RN 
%T Electrical Scanning and Low Pass Filtering in Radio Astronomy
%J Australian Journal of Physics
%D 1962/09/01
%V 15
%N 3
%P 447-449
%K 
%R https://doi.org/10.1071/PH620447
%U https://www.publish.csiro.au/paper/PH620447 
%X In previous studies of aerial smoothing in radio astronomy it has been supposed that the scanning is produced by mechanically moving the aerial. However, the introduetion of a phase gradient across the aperture permits electrical scanning, and the theory of this is an interesting aspect of the general aerial smoothing problem. 
