Hopefully, because I am always the one being helped.
Also, I got this one answer about atmospheric effects in the interferogram phase. This is from HAZA03.
“An indirect way to identify potential contribution of the atmosphere is to generate multiple inteferograms over the same period using different DInSAR pairs and compare the obtained displacement estimates.”
Below is the screenshot of my interferogram products. Is this what it means by multiple interferograms?
I did my request for google group of TRAIN, meanwhile also, I did the request for the GACOS atmospheric correction platform, they answered me and send me maps (.ztd files) of each images with their date … but, now I don ’ t know, how I can use this maps to make my ifgs again ???
Somebody have an idea?
Can you please share some insights on how to use Stamps?
I am new to programming and do not really understand how to Stamps. I am trying to learn SBAS and PSI for my dissertation but I don not understand anything. So far I am able to get unwrapped interferograms individually using SNAP. But I believe that the results may have some decorrelation problems and I need to get rid of them and get deformation maps. I have read many papers which say that after using SBAS, we can get deformation maps directly, so I need to learn SBAS and PSI methods.
I’ve been trying to integrate TRAIN to StaMPS, I’ve following the steps in the manual, but I can’t run it correctly when StaMPS runs step 6, I get a warning “set manual lambda in parms_aps” and “set manual heading in parms_aps”, I falsified these files with parms values and I got to solve it as David Baker says in TRAIN forum, but after that, StaMPS take a pause waiting for input data but I don’t know what to input to continue the processing.
I know TRAIN is integrated into StaMPS and some of the steps are automatically, such as prepare files. I think the problem is the configuration but I don’t know where is my error or why TRAIN wait for input data.
Some months ago, I had success running TRAIN in a_linear method as I showed in my post above, but I don’t know what I’m doing bad now. I know there is a TRAIN forum but I don’t find the same problem such as mine and my request to be user has not been accepted, I can’t post there.
sorry, I have never used TRAIN or GACOS so far.
Best way to reduce atmospheric disturbances are long time series. In StaMPS, you can later remove interferograms of dates which sow abnormal displacement values from the time-series or plotting.
I have only used the linear mode. Generally I do not like applied modelled APS into the interferograms.
They may be very useful, but you need to be very careful as sometimes modelled APS introduces more error that it tries to remove.
If you do not master about APS matter, I suggest either to apply the most basic approaches linear or power, or the step 8 incorporated within StaMPS, which is the traditional spatio-temporal filtering (now a bit old fashion)