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geocoded TerraSAR-X - displacement of asc and desc images


ikleine

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Hello!

I have ascending and descending TerraSAR-X images (3m resolution) of an area near equator.

I extracted an SRTM3 (90m resolution) automatically with SARscape, geocoded (with SARscape 4.4) my images with the SRTM3 and compared ascending, descending and my groundtruth data of the area.

Ascending and descending images seem to be shifted in west and east direction and they both don't fit with the groundtruth data.

Do you have you any idea what could the reason of the displacement?

Thank you for your help!

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