SARPROZ ©

hi,

about the smart option:
https://www.sarproz.com/groups/sarproz-group/forum/topic/non-linear-deformation-question/
https://www.sarproz.com/groups/sarproz-group/forum/topic/about-time-series/

1. don’t use 3, it’s too short. use 5 or more
2. sarproz has a “seasonal trend” field. you find tutorials on that (small area, high buildings), e.g.…[Read more]

We found out the reason: a hidden bug.
The number of interferograms was so high that, when splitting the data to contain the memory, the size of tiles became so small to generate an empty process.
A new version is being uploaded while this post is being published
best

Hi Mehrdad,
your atmosphere is perfectly fine and no problematic at all. Values of the phase are close to ambiguity so you have a phase jump from -pi to pi but that is normal, the phase is wrapped. So, I strongly suggest you not to discard any images because you would just waste precious data. Generally speaking, unless you have huge problems (in…[Read more]

1. you can neglect the “ding” message. it means the sound message could not be played. if you want to suppress it, uncheck “play sounds” in advanced parameters.
2. the coherence map generation was done in a few seconds. to me, it means no interferograms were included in the processing. since no messages are shown, it could be that your images…[Read more]

so,
1. the script is not needed
2. the problem you get now is related to java. if you run the matlab gui and then from matlab you launch sarproz in command line mode, do you get the same problem? if not, then I guess we need to make a little modification, let me know.
3. regarding matlab 2021a and mac: since day 0, we suggest everybody to set up a…[Read more]

1.I do not understand why the script is useless. The way we work on the cluster entails that all the commands should be included in a script which then goes into a pipeline for processing.

you can e.g. run:
matlab -nodisplay -r “main(‘inptuparfile’); quit”
or you can use the compiled version

2.Yes when we run fig=main(InputPar.txt) in the Matlab…[Read more]

1. the script is useless. you can run sarproz on a cluster without graphic interface without that script.
2. so, forget the script. if it freezes, the reason is somewhere else. did you try to run it without the script?
3. before doing that, please update sarproz to the last version. get it running and use the manage version module to download the…[Read more]

it would be good to see the log file
we tried it and it works (even if I do not really see the use to call the main from within a matlab script)
probably the reason is not in the script rather is some other factors preventing the process to execute properly…

1. you miss telling what is your current software version
2. check the message above and download the servaddrs.mat file (do it once more if you already tried). place it in the Sarproz folder. try connecting again. please make sure you get a message saying that the servaddrs.mat file is used. if you do not get that message, you are doing something…[Read more]

Hi Markus,
sure you can generate DEMs in Sarproz. There are many ways for that, depending on the characteristics of the data you want to use. That’s one of the reasons why we did not publish a clear procedure. There are other reasons for that, but the discussion would be a bit long. You can anyway find some material online. We published papers…[Read more]

The stratification in Sarproz is estimated as the APS component correlated with the topography.
If you flag that option, Sarproz will estimate a coefficient and build a model based on the external DEM and on the estimated coefficient. That model will become part of the APS estimated and removed from interferograms.
We advise you to use it only in…[Read more]

Hi,

1. the so-called PS approach is based on the following concept:
A. star-images graph (single master).
B. no spatial filter (full resolution images, no need to generate interferograms).
C. no weights (the phase of each image weighs the same).
In such context, in Sarproz you do not need to generate interferograms. follow the tutorials online to…[Read more]

1. the coherence trend in time becomes visible when you plot the coherence as a function of time. this plot is generated when you display the final test, after APS estimation and removal. the first plot that you show is a histogram, there is no time variable there
2. the histogram you show is not bad. it shows 2 peaks: signal and noise. now you…[Read more]

Hi,
we did not publish anything on this topic. However, the concept is simple: is e.g. 0.7 coherence high or low? it depends! It depends on how many images are in your dataset, on the baseline distributions, it depends on the processing options you have chosen. So, firstly Sarproz runs some simulations to find reference numbers (m the minimum…[Read more]

https://sarproz.com/manual/Sarproz_errors_management.html

We suggest you to take an InSAR course.
Please check the emails you received to know more about courses.
Best

Hi Isaias,
the forum is not suitable for commercial consulting services.
Please contact us via email
Best regards

the result is not bad, actually, it’s pretty ok
do not look at the value of the coherence in the temporal plot, that plot is useful only to look at the trend in time, to check whether there are some left signals that were not well modeled
more suggestions:
* u can take a lower threshold for the amplitude stability index, like e.g. 0.7. in this way…[Read more]

In the time series module you can do mainly 2 things:
1. creating a new time series object, based on whatever set of points you want. For doing that (a) you need the data of the whole project to generate new time series and (b) you need to load the set of points using “load mask”. There you are free to create your custom point selection
2. loading…[Read more]