I got 5.52 day times differences but perpendicular baseline is -1169553 meter. Is it ok to proceed ?
yes, same polarization but not same IW number can not proceed Dr Braun, is is right?
one more thing,
low coherence will affect interferogram. a lot of site in Indonesia, especially in Aceh Tengah, low coherence is presented due to high vegetation. It means I have to elliminate result of DinSAR and can not use Sentinel data to produce a good interferogram due to atmospheric disturbance.
I read some papers. It is low coherence present but at least unwrapping phase can be proceed to D-InSAR with other sensor such as ALOS.
Sorry out of topic, I should move to another topic, but don’t do where to put. just go through my question and answer
every SLC product consists of 3 sub-swaths (IWs)
If your images are taken within the same track (which means they geographically align and have the same extents) there should be no technical problem using them for interferometry.
You can use the TOPSAR Split module to select only one of the three sub-swaths to decrease the file size.
About coherence: It is generally destroyed by vegetation cover. But if you use long wavelengths (ALOS PALSAR) you have higher chances to penetrate some of the smaller vegetation and get coherence from the surfaces. This however ends at high canopies.
I am a new user of SNAP, according to the tutorial you given above, the smooth installation of cygwin and SNAPHU, but when I put the contents of the red box on the contents of the paste -ENTER, there is a problem shown on the picture,I did not get the desired result，and I do not know why, Hope to get your answer, thank you very much!
I tried snaphu phase unwrapping in ubuntu linux 14.04 LTS. My system is having 8 gb ram (dual boot). I got an error.
When i run the command - snaphu -f snaphu.conf Phase_ifg_HH_23Dec2009_26Dec2010.snaphu.img 4672 it gives an error saying-
snaphu v1.4.2 27 parameters input from file snaphu.conf (84 lines total) only one tile–disregarding multiprocessor option Logging run-time parameters to file snaphu.log>
Segmentation fault (core dumped)
Please guide me through this.I am not using cygwin terminal.
Post this I copied the file generated via the following process flow,
into the export folder as,
Now when I run the following (C:\Temp\export>snaphu) in the CMD window it throws an error that reads,
The code execution cannot proceed because cygwin1.dll was not found. Reinstalling the program may fix this problem.
The Cygwin window during the generation of Snaphu.exe looked as,