SARPROZ ©

Hi Mahtab,
saving a selection of points does not mean saving the plot you are diplaying
when you save a selection of points, you save a 2d vector, where the 2 dimensions are sample and lines, independently from what you have on x and y axes in the scatter plot
the only choice you have is whether to save a color or not, as indicated here…[Read more]

Hi Janbu,
there can be a number of reasons for receiving that message, we need more infos to understand the case.
Generally speaking, even if for some reasons NaNs are in the data, that does not mean you cannot process and analyze successfully your data.
Please check the images one by one: do you observe black areas?
Did you generate the adaptive…[Read more]

please read well this document https://sarproz.com/manual/Sarproz_errors_management.html
and update your software
best

Hi,

did you do the steps suggested by the software?

generally speaking, keep always in mind this: https://sarproz.com/manual/Sarproz_errors_management.html
and report log files and error files, if any.
are you using the last version of the software?

best

Hi,
when you get problems/errors, it’s good practice to send also the logs and possible additional error files.
Anyway, in your case, please be aware that when Sarproz starts, it does not try to connect to a specific IP/server. It’s only checking internet connectivity through common webpages, like yahoo. Do you have internet access?
If you are…[Read more]

Hi Arslan,
your question would require to talk about many topics, it cannot be answered with a short post. There are 2 ways for you to solve this issue: 1. take a Sarproz course and learn deeper the technology; 2. get some processing assistance (someone who does the processing for you). Given your student status, I strongly suggest you to go with…[Read more]

We call it “command line” or “background” mode.
If you type it in the search line of the forum here https://www.sarproz.com/sarproz-forum/, you’ll get some discussions.
Here some updates short descriptions containing command line mode infos (there are more…[Read more]

Hi Paulina,
to answer your questions we usually take 5 days of classes: those the core topics of multi-temporal insar…
may I suggest you to take the online course? or alternatively we can organize a course in person in your country…
best

Sarproz only accepts SSC data: Single Look Slant Range Complex images. yours is MGD, Multi Look Ground Range Detected.
best

Hi Anti,
here some infos https://www.sarproz.com/groups/sarproz-group/forum/topic/sentinel-orbits-in-sarproz/
usually Sarproz tells you what orbit files are needed, however, I am afraid in this case (change of repository), the error prevents the message from being visualized.
You should manually check the orbits you need and place them in the…[Read more]

Hi Emre,
the model you are applying, linear deformation, does not apply to your case, since you had earthquakes.
the suggestion for you is to take an InSAR course (if you want, we do offer InSAR course based on sarproz).
all the best

Hi,
here the concept is the following: when you take an image as a reference, if the image is noisy, the noise is propagated to all other images (being the reference image set to zero, since it’s the difference with itself). This is what you see in that plot.
However, Sarproz takes into account this phenomena and applies some corrections. So,…[Read more]

Hi,
first of all, to be able to obtain accuracy, we would need the truth, which usually we don’t have. So, it would be better to talk about precision.
In any case, the standard deviation is calculated from the phase residuals (observed interferometric phase after removal of the model you choose for the processing). As a consequence, you can…[Read more]

1. you did not include all pictures (velocity is not visible). you have to compare all parameters in the same coordinate system (like in sar coordinates)
2. if height and velocity are correlated, something is wrong
3. the range of values to be estimated is too small (both for velocity and height). also, you have lots of images, it means no risk to…[Read more]

https://www.mathworks.com/matlabcentral/answers/723523-how-do-i-resolve-issues-associated-with-matlab-compiler-runtime-cache-corruption

you previously posted your question in a discussion on a different topic, so, it has been moved here.
the question you are asking has been discussed in many other posts.
here an example:
https://www.sarproz.com/groups/sarproz-group/forum/topic/slight-offset-after-orthorectification-s1/
please read carefully the forum and the documentation before…[Read more]

Hi,

a journal paper that described the core algorithms in Sarproz:

D. Perissin and T. and Wang, “Repeat-Pass SAR Interferometry with Partially Coherent Targets,” IEEE Transactions on Geoscience and Remote Sensing, vol. Volume 50, p. Pages 271–280, 2012.

a confe…[Read more]

you are right that a low number of images implies low robustness in the estimation of the coherence and a bias towards high values. That said, numbers are relative and dependent also on other factors. so, it is difficult to tell you what number to use without looking at your dataset and at your results in detail. play with the numbers and observe…[Read more]

Hi Paulina,
there are multiple things to consider in your case. An exhaustive answer to your question would require to discuss about various topics. You might want to take a Sarproz course to get more experience (in case, contact courses@sarproz.com). For the moment let me tell you that you should consider the APS estimation as an independent…[Read more]