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.<>
Geometric accuracy in airborne SAR images
IEEE Transactions on Aerospace and Electronic Systems ; 25 , 2 ; 241-258
1989-03-01
1477664 byte
Article (Journal)
Electronic Resource
English
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