Hello, My Friends …
I try to Generated DEM with Sentinel1 data.
After I read most of the articles here about generated DEM, I download more than 4 pair for Sentinel 1 with different dates and I choose the best pair to show the result here …
2 images of Sentinel-1 with temporal baseline 12 days and perp… baseline 172m…
my coherence very good with mean 0.7 as shows here
Dear Tomcator ,thanks for your replay.
Of course I performed Deburst step and all other steps without any problem …
But I think I found the source error , which is I used reference DEM with UTM coordinate and now I try with geographic coordinate and I get best results as shown below with one line in red box…
My question , what the best parameter for snaphu export?? and how will be the effect on the result for my phase before snaphu export without these line as shown below?
during the unwrapping, these patterns are sometimes introduced.
Try to reduce the number of tiles and add a considerable overlap instead. An explanation is given here: SNAPHU parameters
So you can try to increase the tile overlap firrst and reduce the number of tiles a bit as well. If this doesn’t give better results, try SMOOTH instead of TOPO. Lastly you compare MST and MCF for the unwrapping.
Dear ABraun, thank you for your replay and soeey for my late replay but all time yesterday I try with all parameters of snaphu export since I know my problem with these parameters because of my interferogram result with no phase jumping or any unnormal line. Finally, I got the excellent unwrapped image with the number of tiles 1 for rows and columns in my image of 3 bursts default another parameters as shown below 22.bmp (1.7 MB)
One case I get a good unwrapped image with DEFO option with default other parameters as shown below 25.bmp (1.7 MB)
these images for to scene of S-1B.
My question …what best method to mosaic them images from two scenes? I used SAR mosaic images after all processing and it has done but with the different legend or don’t read elevation as shown in below image
Dear ABraun…
I found the solution …
A Slice Assembly work before interferogram that means after Coregistration of two subswath belong to different scens then make slice assembly as shown in below