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Geo-location error correction for synthetic aperture radar image using the ground control point

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3 Author(s)
Rho, S.H. ; ISR R&D Center, LIGNex1, Yongin, South Korea ; Jung Kim ; Kwag, Y.K.

Spaceborne synthetic aperture radar(SAR) can provide a high resolution image in all weather conditions. Spaceborne SAR(Synthetic Aperture Radar) obtains electronic image of earth's surface using electromagnetic waves. SAR image inherently contains geo-location error which is caused by SAR image acquisition geometry, imaging mode, characteristics of reflectivity and image formation process. In this paper, a geo- location error correction method is presented to analyze and correct the geometric distortion by terrain height error. Using RADARSAT-1 image, a simulation is performed to evaluate the proposed geo-location algorithm. To analyze the effect of proposed correction method, the corrected SAR images are compared with the reference image by RMSE values.

Published in:

Geoscience and Remote Sensing Symposium (IGARSS), 2011 IEEE International

Date of Conference:

24-29 July 2011