DocumentCode
1134952
Title
Estimation of Spectra from Speckled Images
Author
Goldfinger, Andrew D.
Author_Institution
Applied Physics Laboratory, Johns Hopkins University, Johns Hopkins Road, Laurel, MD 20707
Issue
5
fYear
1982
Firstpage
675
Lastpage
681
Abstract
The effect of coherent speckling on the spectra of images and other signals is investigated. A method for estimating the spectrum of the unspeckled image is developed, and the errors inherent in such an estimate are analyzed. It is found that the error decreases when number of looks, number of averaged spectra, and contrast increase, and when spectral width decreases.
Keywords
Adaptive filters; Fourier transforms; Frequency diversity; Image analysis; Interference; Nonlinear filters; Radar scattering; Signal processing; Signal resolution; Speckle;
fLanguage
English
Journal_Title
Aerospace and Electronic Systems, IEEE Transactions on
Publisher
ieee
ISSN
0018-9251
Type
jour
DOI
10.1109/TAES.1982.309281
Filename
4102711
Link To Document