DocumentCode
1438103
Title
Orthogonally aliased fourier transforms for the analysis of sparsely populated frequency spectra
Author
Benjamin, R.
Author_Institution
Government Communications Headquarters, Cheltenham, UK
Volume
124
Issue
6
fYear
1977
fDate
6/1/1977 12:00:00 AM
Firstpage
508
Lastpage
510
Abstract
A trick permits the use of several aliased fast Fourier transforms (f.f.t.) in place of a single unambiguous f.f.t. If the proportion of active spectral lines, or directions of arrival, is well under 1%, their location, but not the amplitude, can then be computed with a dramatically reduced workload.
Keywords
fast Fourier transforms; spectral analysis; FFT; sparsely populated frequency spectra; spectral analysis;
fLanguage
English
Journal_Title
Electrical Engineers, Proceedings of the Institution of
Publisher
iet
ISSN
0020-3270
Type
jour
DOI
10.1049/piee.1977.0100
Filename
5252706
Link To Document