Experiences in multi-sensoral SAR geocoding

Working with SAR data acquired by different sensors one has to keep in mind that they vary in wavelength, polarization and imaging geometry. This means that they are stored in incomparable ways after the SAR processing. To allow a combination of data delivered by different sources the images must be converted into a uniform system. In general the data are rectified and transformed in a map projection. This procedure is called geocoding. The starting point is the goal to utilize multi-mission SAR data for monitoring purposes. The correction process, namely the parametric geocoding approach is explained. The main problems like the SAR inherent distortions and their variations due to the different imaging conditions are described. The accuracies achieved are presented as well to allow an estimation of remaining distortions