SARPROZ ©

Now it is totally clear to me. I appreciated all of your answers, thank you!

no.
ASI and reflectivity maps are calculated using the set of images of your dataset, independently from the images graph (which is something related to operations involving pairs of images)
this means, if you change the set of images, you have to reprocess ASI and REFL maps

Thank you so much for the prompt reply. Now I understand where the problem is.

So does it also mean that, everytime if I change the graph e.g. from STAR to Full graph or MST, I should re-process the ASI for the current graph?

if you select your points based e.g. on the amplitude stability index == ASI > 0.75 and you get the same amount of points in subsets A, B and C, the explanation is only one: ASI is the same in the 3 datasets.
Instead, for each subset you have to re-process the ASI so that you will get 3 quantities: ASI_A, ASI_B and ASI_C
best

Dear Prof. Daniele，

I had asked in the forum that I coregistered and processed a long time series dataset including 280 images, and then I changed the “Dataset.txt” to process different subsets individually in one project. Here is the question link:Big dataset processing

The 3 subset is 2010-2012,2012-2014,2014-2016, and the whole dataset is fr…[Read more]

Hi,

Thank you for your reply. We will have to analyze large areas, so a per pixel value is of interest. Is it possible to have a value at the 4 corners of the area of interest to interpolate the incidence angle per pixel instead?
Best

Thank you very much for your answer as quick as ever! I’ll follow the tutorial to do a test.
Sure, I’d like to take the course when our financial support could afford it. 🙂

Hi,
at the moment we do not have an option to generate a matrix of incidence angle values for all pixels, accessible from the compiled version. You can get it only using the pcodes, because it’s a low-level function. However, do you really need this value for all pixels? if you are not analyzing a huge area, probably an average value is enough. To…[Read more]

Hi,
here you can see how to process and check amplitude time series (part III): https://www.sarproz.com/utp-course-2012/
To use the result of the amplitude time series processing in the phase time series analysis, you just need to use the amplitude model as weight.
For a more complete discussion and explanation, the best way would be taking a…[Read more]

Hi,
generally speaking, read carefully this: https://sarproz.com/manual/Sarproz_errors_management.html
In your case, given this message: “get_master_pts: previous files available. Exiting. ”
start over the whole process again (don’t update the site, re-extract the master image)
best

Dear Professor Periz

Thank you for the clarification, yes I am using an old version would love to have the new version to continue my experiments, actually I am working with 35 Sentinel images both in ascending and descending respectively over the central mountain regions of Sri Lanka, for the topography monitoring due to ongoing series of…[Read more]

hi,
here some answers to your points
1) if you use the non-parametric approach (e.g. smart=5), the software does not estimate a linear trend. what you can export instead is the cumulative displacement
2) sorry, don’t understand your question
3) ‘External DEM and synthetic amplitude in SAR coordinates’ is a function to generate those products. you…[Read more]

Hi,
1. you have an old software version, if you want you can get a more recent one with the manage version module
2. in some cases that might still be under investigation sentinel interferograms can be affected by phase jumps along the range direction between two adjacent bursts in azimuth. the message you got warns you of such a possible case
best