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periz replied to the topic Master extraction error in the forum Sarproz Forum 5 years, 5 months ago
This is a segmentation violation, which means, your system is not stable and it is somehow conflicting with Matlab.
Some messages related to the audio drivers might indicate that the problem is there.
For what concerns Sarproz, if the audio drivers have issues, you should solve the problem by unchecking the “play audio” box in here…[Read more] -
periz replied to the topic Sarproz Updates Server in the forum Sarproz Forum 5 years, 5 months ago
We have migrated to a new server.
We will release soon a new update with the new server reference
More news on the forum
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periz replied to the topic How can I display PS points onto regular grid in Google Earth? in the forum Sarproz Forum 5 years, 6 months ago
option nr 1: you create your custom grid at the beginning (initial mask) and you just keep it
option nr 2: to avoid possible wrong residual height estimation you force it to zero (geo localization is dependent on height)
option nr 3: you use the filter/matrix visualization feature in scatter plot and you output your result in geo coordinates
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periz replied to the topic Persistent Scatterers steps and interferograms generation in the forum Sarproz Forum 5 years, 6 months ago
nothing is wrong. yours is the simplest and most straightforward approach for analyzing a small area.
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periz replied to the topic RESULTSCoer not found in the forum Sarproz Forum 5 years, 6 months ago
The message is not a problem. The coherence file is created after the coherence is saved. The coherence is the output of the mutli-temporal/time series analysis.
More attention deserves the progress bar. Please check if you get other kind of messages. It could be a network problem: try for a moment to stop anti-viruses or firewalls or similar and…[Read more] -
periz replied to the topic non-linear deformation question in the forum Sarproz Forum 5 years, 6 months ago
if you have a very good dataset, many images, regular time sampling, good normal baselines dispersion, stable and robust estimation, then go directly with the non-linear model.
if your dataset is not ideal, not many images, not so robust and so on, go with the linear model. then only if you notice problems, you can run a non-linear estimation,…[Read more] -
periz replied to the topic non-linear deformation question in the forum Sarproz Forum 5 years, 6 months ago
1. the atmosphere here has nothing to do. if you use the smart function, the linear phase won’t be removed. However, you still have the option to remove it, by choosing “read” on the corresponding line. Clearly, to read it from the disk, you must have previously processed and saved it.
2. if the non-linear model is obtained with a low pass filter,…[Read more] -
periz replied to the topic import sentinel data error in the forum Sarproz Forum 5 years, 6 months ago
you need to update the software
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periz replied to the topic Errors at Graph Analysis and Refinement in the forum Sarproz Forum 5 years, 6 months ago
As mentioned to you by email, you need to reproduce the error with the compiled version to allow debugging it
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periz replied to the topic APS Processing in mountainous areas in the forum Sarproz Forum 5 years, 6 months ago
Each situation is specific, depending on the area, the data, the objective of the analysis.
I am not going to comment on your case, which would require analyzing many things.
A simple general statement: this website contains a decent amount of information about the QPS approach.
I am reporting here a single link, but there are many more:…[Read more] -
periz replied to the topic Atmospheric Contribution In Single Interferogram in the forum Sarproz Forum 5 years, 7 months ago
We are just terminating a major update exactly to allow removing wide atmospheric effects and highlight local landslides. Wait maximum an other couple of weeks.
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periz replied to the topic Aqcuire the APS removed stack in the forum Sarproz Forum 5 years, 7 months ago
You can plot the estimated APS from the APS module https://sarproz.com/manual/elabora_atmo.html
you can also plot the APS by selecting “choose a real file” in the “plot paramters” module and then browsing to the APS folder https://sarproz.com/manual/plot_par.html
You can also plot an interferogram by removing the estimated APS in the “Single…[Read more] -
periz replied to the topic Warning MT Adaptive Mask in the forum Sarproz Forum 5 years, 7 months ago
that’s something we need to check looking at your data then
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periz replied to the topic Warning MT Adaptive Mask in the forum Sarproz Forum 5 years, 7 months ago
Did you plot the interferograms?
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periz replied to the topic Warning MT Adaptive Mask in the forum Sarproz Forum 5 years, 7 months ago
That module generates an MT adaptive mask, it does not calculate interferograms.
When you have the adaptive mask, you can use it to filter interferograms.
There is a preset in the InSAR processing options: “multi-temporal apdative”
https://sarproz.com/manual/mt_adaptive_mask.html
https://sarproz.com/manual/insar_params.html
after you get your…[Read more] -
periz replied to the topic Warning MT Adaptive Mask in the forum Sarproz Forum 5 years, 7 months ago
this is a case where the warning is actually useless, sorry for that
basically the writing function is set to launch a warning when NaNs are inputed (it can be indicative of some issues),
however, in this case NaNs are kept by construction at the borders of the image
you can proceed further, there should be no problem
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periz replied to the topic Warning MT Adaptive Mask in the forum Sarproz Forum 5 years, 7 months ago
we would need to see the full log to try to understand.
you might even need to flag the debug mode to pinpoint the step where the message is given
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periz replied to the topic Error in coregistration step with ALOS data in the forum Sarproz Forum 5 years, 7 months ago
There is not much more to add. Take a bigger reference window, lower the SNR and the correlation thresholds, lower the minimum number of points. are you processing the full frame? if not, do it.
but the question is: what are you using these data for? for sure, no interferometry will be possible.
if you just want to plot the amplitude, you can…[Read more] -
periz replied to the topic ERS Orbits in the forum Sarproz Forum 5 years, 7 months ago
1. next time zip the log before attaching it
2. next time read the messages from the sw. if you do what the sw tells you to do, we all save time. specifically, the sw told you to manually unzip the downloaded orbits files
3. you have also the option to do things manually. read well the link you posted:…[Read more] -
periz replied to the topic Meaning of the csv results in the forum Sarproz Forum 5 years, 7 months ago
The first series are the values coming from the processed phase. The second series are the values coming from the module you adopted for processing
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