Dear Dr periz
thank you for quick reply. In InSAR analysis of 2 coherent images (with 1 year interval), I realized that the maximum range of subsidence is 17 cm in bowl center (Just as a theory), so is it logical to put (0 , -170) or (170 , -170) for linear trend? Also I found there is gap between the results of sentinel-InSAR analysis in SARPROZ software and snap (Values of SARPROZ were more estimated than snap). How should this gap be interpreted?
regards
Hamid