StaMPS-Visualizer, SNAP-StaMPS Workflow

thho · January 7, 2021, 10:40am

Sry what do you mean? Can you provide a screenshot and describe what you want to save?

suribabu · January 7, 2021, 11:08am

I want to save the background image. Is it possible?

thho · January 7, 2021, 5:08pm

Ok, as far as I understand you want to save the map canvas with the satellite tiles and the PS point overlay, right?

Atm, I have not implemented a tool to capture this combination as an image to export, it is on the TODO list, but with a rather low priority. If you need to export it, I would do it like I did in my thesis, pages 46,47,56 and 57

in the control panel, select the point size that fits the zoom level and density of points. In your image above, in my opinion the points a slightly to large since they overlapp
zoom to your desired level
take a screenshot (on ubuntu install e.g. shutter) of the visualizer window
open an image tool like inkscape ( sudo apt install inkscape and it is also available for Windows) and crop and clip your image until it has the layout you want to.

It is a workaround, but for me it was a good way to get nice looking figures out of the visualizer.

suribabu · January 8, 2021, 4:56am

Thank you Thho.

suribabu · January 8, 2021, 5:36am

Sir, When will SBAS processing will come for SNAP2StaMPS?

Nevertheless, a major drawback of StaMPS/MTI is that no officially supported preprocessing of S-1 data with SNAP for the SBAS workflow is as yet provided.

thho · January 8, 2021, 6:39am

At the moment the most officially accessible workflow to my knowledge for SBAS with S1, SNAP and StaMPS is

It is not part of the official SNAP release. So if you want to use it, I recommend to read this thread above to be aware of potential issues.

suribabu · January 8, 2021, 6:45am

Thank you thho.
Very nice thesis (Analysing the Capabilities and Limitations of InSAR using Sentinel-1 data for Landslide Detection and Monitoring ).

suribabu · January 10, 2021, 6:09am

How can I plot the below one using SNAP-STAMPS/MTI processed data?

thho · January 10, 2021, 7:38am

the visualizer has the tab Baseline Plot where you can creat exactly those plots, see the manual for detailed step by step walk through how to get the data out of SNAP and into the Visualizer.

suribabu · January 10, 2021, 7:50am

Dear Thho,
How can I get this below table values from SNAP-StaMPS (I’m getting only time series table.csv)?

ABraun · January 10, 2021, 10:20am

you need a stack containing all products in SNAP (of course the correct reference product is important), then you can use the InSAR Stack tool and export this table as csv.

suribabu · January 10, 2021, 4:41pm

Dear ABraun and Thho,

In SNAP I followed below steps for generate the input to the StaMPS:

TOPSAR-Split and Apply orbital file
Back-Geocoading
Debrust
4.Subset
Interferogram formation
SNAP2StaMPS Export

And then using StaMPS in Matlab (stamps(1,8)), I generated time series also.

But now I saw several publications they followed below processing steps:

TOPSAR-Split and Apply orbital file
Enhanced spectral diversity
Back-Geocoading
Debrust
5.Subset
Interferogram formation
Topographic Phase removal
SNAP2StaMPS Export

Is it important to process Enhanced Spectral Diversity and Topographic Phase removal?

Thank you so much.

ABraun · January 10, 2021, 5:16pm

Topographic Phase Removal is a part of the interferogram generation, but only if it is selected

grafik

This explains why some studies mention it as a separate step and others don’t. But for differential InSAR it is advisable to do it.

ESD is needed when you select more than one burst. Again, some studies might only process one burst (small study area) and therefore skip it.

suribabu · January 11, 2021, 5:14am

Thank you so much. While processing I did that (selected the subtract topographic phase). I thick no need to run again the Topographic phase removal. Is it correct?

while processing I used around 5 burst, but I didn’t go though the Enhanced spectra diversity step. Is it must to process the ESD step?

thho · January 11, 2021, 7:13am

Yes, it is highly recommended, since you are looking at minimal phase differences in DInSAR and ESD is meant to minimize divergence of the signal of different bursts which originate from the sinsing method but do not represent “real” differences, in which you are interested (roughly speaking). For more theoretical background and explanation, start reading the Help in SNAP of the ESD operator.

suribabu · January 11, 2021, 7:17am

Thank you thho.

suribabu · January 11, 2021, 8:50am

After Geocoding I’m running the ESD step, but it is showing below error. Please check it once.

ABraun · January 11, 2021, 9:16am

from your screenshot I see that you are using an old version of SNAP, please install version 8 and all updates - at best with deleting old user configuration data as shown here.

suribabu · January 13, 2021, 6:00am

Thank you ABraun. It’s running.

Giova · January 13, 2021, 3:45pm

Hi @thho, I have installed this new version of StaMPS-Visualizer on VirtualBox Ubuntu 18.04, R 3.6.3 and RStudio 1.2.5033, but when I visualize PS in the plot, after while that I’m moving the maps, Ubuntu blocks (only with a .csv upload). Do you know the reason?
Thanks.