The aim here is to do a proof-of-concept for atmospheric correction using GACOS.
There are two components of an atmospheric correction that will be tricky to untangle (and we may not need to):
1) DEM imperfections (physical alterations of landscape or errors) - will be proportional to perpendicular baseline
2) Atmospheric variations - won't be proportional to perpendicular baseline
Questions
Does GACOS perform well enough in our (high-relief!) regions of interest?
Would height correlation, or some other simple model, work as well?
What would an automated workflow incorporating GACOS look like?
Method
reprocess some interferograms over a volcano (Edgecumbe or a volcano with higher relief?) with and without atmospheric correction
metrics which should be reduced by a good atmospheric correction:
RMS of coherent phase
phase-altitude correlation coefficient
correlation distance (likely most difficult to implement)
With renewed direction on the Policy on Sensitive Technology Research and Affiliations of Concern, integrating GACOS corrections into the InSAR workflow is likely unfeasible at this time.
The aim here is to do a proof-of-concept for atmospheric correction using GACOS.
There are two components of an atmospheric correction that will be tricky to untangle (and we may not need to): 1) DEM imperfections (physical alterations of landscape or errors) - will be proportional to perpendicular baseline 2) Atmospheric variations - won't be proportional to perpendicular baseline
Questions
Method