DocumentCode
32593
Title
Autofocus algorithm for SAR imagery based on sharpness optimisation
Author
Yang Gao ; Weidong Yu ; Yabo Liu ; Wang, Ruiqi
Author_Institution
Lab. 6, Inst. of Electron., Beijing, China
Volume
50
Issue
11
fYear
2014
fDate
May 22 2014
Firstpage
830
Lastpage
832
Abstract
To focus synthetic aperture radar data suffering from phase errors, a novel autofocus algorithm is presented. The algorithm uses the coordinate descent technique to estimate the phase errors for maximum sharpness autofocus, where analytical-form expressions are easy to find for the optimal estimates on a per-parameter basis. Experimental results show the validity of the proposed algorithm.
Keywords
optimisation; phase estimation; radar imaging; synthetic aperture radar; SAR imagery; analytical-form expression; coordinate descent technique; maximum sharpness autofocus error; per-parameter estimation; phase error estimation; sharpness optimisation; synthetic aperture radar;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el.2013.4111
Filename
6824379
Link To Document