Describe LongSwath processing problems here.
Report by Matt Garthwaite on phase differences between overlapping portions of interferograms for parts of a long swath attached here. (dated 2008/07/14, revised version uploaded 17 July)
The problem with IntSim failing for very long strips seems to be solved by a modification to the "make_sim.pl" script from MattPritchard, see Patches.
Matt G's analysis seems to involve a different error in the ROI_pac scripts or in the diffnsim program.
Improvement 2a notes a different problem with Long-swaths:
Recently I've noticed that the azimuth offset between the simulation and the interferogram for some scenes longer than about 20,000 lines is quadratic and can't be matched with an affine transformation. I showed this to Paul R. at the DESDynI workshop, but a fix isn't clear. I have a kludge that runs IntSim twice to solve this problem: the first time solves for the quadratic offset and the second call to a modified IntSim includes this quadratic component when mapping the pixel locations.