COARSEORB

This chapter describes the processing step COARSEORB. In this step the coregistration based on the orbits of slave and master is computed with an accuracy of about 30 pixels (precise orbits). This is a fast way to get the coarse offsets. Before the FINE coregistration however the step COARSECORR has to be run, in order to get the coarse offsets within a few pixels. (FINE requires the initial estimated offset within a few pixels.)

The offset is defined in such a way that for a point P in the master with coordinates Pm(line,pixel) and the same point in the slave image with (slave system) coordinates Ps(line,pixel) it holds:

$$P_s(l,p) = P_m(l,p) + {\rm offset}(l,p)$$ (M1)