DocumentCode
2906132
Title
Extending the phase gradient autofocus algorithm for low-altitude stripmap mode SAR
Author
THOMPSON, Douglas G. ; Bates, James S. ; Arnold, David V. ; Long, David G.
Author_Institution
Brigham Young Univ., Provo, UT, USA
Volume
1
fYear
1999
fDate
1999
Firstpage
564
Abstract
The phase gradient autofocus (PGA) algorithm has been widely used in spotlight synthetic aperture radar (SAR) to remove motion-induced blurs in the images. The PGA algorithm has been proven to be a superior autofocus method. This algorithm is extended for application to low-altitude stripmap mode SAR. Standard PGA algorithms are formulated only for spotlight-mode SAR. We describe a new algorithm which allows PGA to be applied to stripmap-mode SAR. Three SAR images with different characteristics are used in demonstrating this algorithm
Keywords
focusing; image enhancement; interference suppression; radar imaging; synthetic aperture radar; PGA algorithm; low-altitude stripmap mode SAR; motion-induced blurs; phase gradient autofocus algorithm; spotlight synthetic aperture radar; Azimuth; Bandwidth; Chirp; Electronics packaging; Focusing; Fourier transforms; History; Image segmentation; Phase estimation; Synthetic aperture radar;
fLanguage
English
Publisher
ieee
Conference_Titel
Geoscience and Remote Sensing Symposium, 1999. IGARSS '99 Proceedings. IEEE 1999 International
Conference_Location
Hamburg
Print_ISBN
0-7803-5207-6
Type
conf
DOI
10.1109/IGARSS.1999.773566
Filename
773566
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