Improved SAR Motion Compensation without Interpolation

Conference: EUSAR 2008 - 7th European Conference on Synthetic Aperture Radar
06/02/2008 - 06/05/2008 at Friedrichshafen, Germany

Proceedings: EUSAR 2008

Pages: 4Language: englishTyp: PDF

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Zaugg, Evan C.; Long, David G. (Brigham Young University - Microwave Earth Remote Sensing Laboratory, 459 Clyde Building, Provo, UT 84602)
Wilson, Michael L. (U.S. Naval Research Laboratory)

Motion compensation is an important part of SAR processing for high resolution airborne sensors, such as those flown on UAS's. The non-ideal motion of the platform results in degraded image quality, but for known motion, corrections can be made. Traditional motion compensation requires a computationally costly interpolation step to correct translational motion greater than a single range bin. This paper presents an efficient new motion compensation algorithm that corrects this range shift without interpolation. The new method is verified with simulated SAR data and data collected with the NuSAR.