DocumentCode
968709
Title
Extended PGA for range migration algorithms
Author
van Rossum, W.L. ; Otten, M.P.G. ; Van Bree, R.J.P.
Author_Institution
NO Defence, Security & Safety, Hague, Netherlands
Volume
42
Issue
2
fYear
2006
fDate
4/1/2006 12:00:00 AM
Firstpage
478
Lastpage
488
Abstract
The phase gradient autofocus (PGA) algorithm is extended to work for synthetic aperture radar (SAR) spotlight images processed with range migration (w-k) algorithms. Several pre-processing steps are proposed for aligning the range-compressed phase-history data needed for successful autofocusing of the data. The proposed algorithm gave good results for both data with large point targets and data without point targets.
Keywords
focusing; gradient methods; radar imaging; synthetic aperture radar; PGA algorithm; SAR; data autofocusing; phase gradient autofocus algorithm; range migration algorithms; spotlight images; synthetic aperture radar; Azimuth; Data security; Electronics packaging; Error correction; Image resolution; Image restoration; Phase estimation; Safety; Scattering; Synthetic aperture radar;
fLanguage
English
Journal_Title
Aerospace and Electronic Systems, IEEE Transactions on
Publisher
ieee
ISSN
0018-9251
Type
jour
DOI
10.1109/TAES.2006.1642565
Filename
1642565
Link To Document