Geometric accuracy in airborne SAR images

descriptionPublicationkeyboard_double_arrow_right Article 01 Mar 1989Publisher:Institute of Electrical and Electronics Engineers (IEEE)Journal:IEEE Transactions on Aerospace and Electronic Systems, volume 25, pages 241-258 (issn: 0018-9251,

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Authors: D. Blacknell; A. Freeman; S. Quegan; I.A. Ward; I.P. Finley; C.J. Oliver; R.G. White; +1 Authors

doi: 10.1109/7.18685

Geometric accuracy in airborne SAR images

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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. >

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