I generated Interferogram from back-geocoding stack, which is combined with 12 SAR data from sentinel-1a. i have a problem, my interferogram is shown very much noise. I’m not sure that cause by not correlation of image or wrong process.
In this picture is shown paired interferogram between 2017-02-22 and 2018-02-17 compare with a landsat-8 image in the same area.
why my interferogram not show any pattern?
Can i use this interferogram to DinSAR or PSInSAR?
you are observing temporal decorrelation of the phase: Most of the surfaces have changed between the first and second image, especially vegetation, which leads to bad interferogram quality.
Thank you for your reply. Is it possible to use these bad interferogram quality in StaMPS method?
(I want to use StaMPS method for estimate the ground displacement . )
Persistent scatterer techniques, such as StaMPS, are based on a slightly different principle. They are more suitable to deal with temporal decorrelation, because only pixels with high stability are used. This however, requires the availability of a minimum density of usable points.
Please have a look at this post: About the StaMPS category
