DocumentCode
1536171
Title
Detecting moving targets in SAR imagery by focusing
Author
Fienup, J.R.
Author_Institution
Veridian Syst., Ann Arbor, MI, USA
Volume
37
Issue
3
fYear
2001
fDate
7/1/2001 12:00:00 AM
Firstpage
794
Lastpage
809
Abstract
A new method for detecting moving targets in a synthetic aperture radar (SAR) image is presented. It involves segmenting a complex-valued SAR image into patches, focusing each patch separately, and measuring the sharpness increase in the focused patch. The algorithm is sensitive to azimuth velocities and is exquisitely sensitive to radial accelerations of the target, allowing it to detect motion in any direction. It is complementary to conventional Doppler-sensing moving target indicators, which can sense only the radial velocity of rapidly moving targets.
Keywords
focusing; radar imaging; radar tracking; synthetic aperture radar; target tracking; SAR imagery; azimuth velocities; complex-valued SAR image; focused patch; focusing; moving target detection; radial accelerations; sharpness; synthetic aperture radar; Acceleration; Airborne radar; Azimuth; Doppler radar; Focusing; Motion detection; Phase detection; Phase estimation; Radar detection; Synthetic aperture radar;
fLanguage
English
Journal_Title
Aerospace and Electronic Systems, IEEE Transactions on
Publisher
ieee
ISSN
0018-9251
Type
jour
DOI
10.1109/7.953237
Filename
953237
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