DocumentCode
835731
Title
Geometric accuracy in airborne SAR images
Author
Blacknell, D. ; Freeman, A. ; Quegan, S. ; Ward, I.A. ; Finley, I.P. ; Oliver, C.J. ; White, R.G. ; Wood, J.W.
Author_Institution
GEC-Marconi Res. Center, Chelmsford, UK
Volume
25
Issue
2
fYear
1989
fDate
3/1/1989 12:00:00 AM
Firstpage
241
Lastpage
258
Abstract
Uncorrected across-track motions of a synthetic aperture radar (SAR) platform can cause both a severe loss of azimuthal positioning accuracy in, and defocusing of, the resultant SAR image. It is shown how the results of an autofocus procedure can be incorporated in the azimuth processing to produce a fully focused image that is geometrically accurate in azimuth. Range positioning accuracy is also discussed, leading to a comprehensive treatment of all aspects of geometric accuracy. The system considered is an X-band SAR.<>
Keywords
aircraft instrumentation; microwave imaging; position measurement; radar; X-band; airborne SAR images; autofocus; azimuth processing; azimuthal positioning accuracy; defocusing; geometric accuracy; microwave imaging; range positioning accuracy; synthetic aperture radar; Azimuth; Focusing; Synthetic aperture radar;
fLanguage
English
Journal_Title
Aerospace and Electronic Systems, IEEE Transactions on
Publisher
ieee
ISSN
0018-9251
Type
jour
DOI
10.1109/7.18685
Filename
18685
Link To Document