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
fDate :
4/1/2006 12:00:00 AM
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;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
DOI :
10.1109/TAES.2006.1642565
