SARPROZ ©

I do not know what you mean with “grayed out”.
I’d suggest to show you a comparison between a normal image and what you call a “grayed out” one.
Isn’t it that it was raining? Anyway, if problems, I guess they belong to the data, not to the extraction code…
About the examples you attached, the first 2 images look coregistrable but shifted.
The…[Read more]

Dora,
check the formatting of text files (end lines/carriage returns/tabs/…)
it may have been messed up by some operations (like ftp-ing files from linux to windows)
d

Hi Dora,
together with Yuxiao we are downloading your data and checking what’s the problem.
We’ll let you know soon
dan

Nader,

as a kind of general comment, with 6 images you should use a multi-master approach, and use also unwrapped interferograms. However, there are many comments more for your case, and also many options that could be chosen to help you solving your case. So, again, I suggest you to take a direct contact with some of us and have a remote session…[Read more]

Hi Nader,
when you get an error, zip the log and the lasterror.mat files and attach them together with your message.
From the very brief message visible in your attachment, it looks like one of the folders in the path of your data is containing spaces.
As previously said, you should learn the patience to go through the messages given by the…[Read more]

Dear Nader,

here my comments:
1. yes we know that a complete manual is needed and we are working at that. in the meanwhile, please take seriously the available documentation. even if limited, it’s containing a lot of information and it takes time to be digested.
2. together with the documentation, you need to patiently read all the messages that…[Read more]

Hi Nader,

about the second question, here you can read something:
http://www.sarproz.com/groups/sarproz-group/forum/topic/generic-question-about-ps-preliminary-selection/
Also, check the references mentioned there in the manual.

About the first question, we should find some time to have a remote session for looking at your data and at all steps…[Read more]

Hi Qingli,
is your area close to the borders of the footprint of Sentinel?
Check the footprint.kml and the masterarea.kml
what about the amplitude of ALL images?
You can check it either from the SLC data processing or by selecting the images one by one in the view parameters module

Check if psftp.exe is in the Sarproz folder.
If not, google it, download it and place it there.
If psftp.exe is there and you still cannot download, write to support at sarproz dot com
we need to check in more detail ur case

why are you surprised that the result is within the imposed range?
the range is used exactly for the purpose to limit the result within a minimum and a maximum.
the result can be different in case of noisy data (the algorithm has a random component, and random data can lead to random results)

anyway, never use a-symmetric ranges in the APS…[Read more]

Hi Amir,

this means that you are missing the matlab parallel processing toolbox.
You should contact your IT person for that. I can anyway send you the compiled version and you can keep both versions on your computer (the license is the same). You can use the compiled one for running the operations requiring functions not installed in your matlab…[Read more]

Your matlab version is not supporting the function needed for the update

hi Shimin,

you should reduce the jpg image and paste it here again, so that we can see the error. Also, if you got a lasterror.mat include it together with the log (zip them before attaching them here).
In the meanwhile, to get an update write to support at sarproz dot com, specifying whether you are using the pcodes version, compiled for win or…[Read more]

The coregistration refinement may be needed if you are working with high resolution, high normal baselines, important topography.
We had clear evidence of that with Cosmo datasets in mountainous areas.
Your errors look a bit strange and in fact may be due to the 2015b version of matlab
d

Hi Jackie,

unfortunately at this moment the coregistration refinement works only with images coregistered by Sarproz. The reason is that the algorithm is using the results of the first coregistration.
Would that be possible for you to access SLC images? it would also be a chance to compare the result with yours.
We could also implement a…[Read more]

Hi Ivana,

you raised a good point. We used to store the normalization constants many years ago, but we did not implement it when we included the SLC module. The image amplitude is normalized to have an average value equal to 1. You could further equalize the images using only stable targets. But the matter of fact is that at this moment the…[Read more]

Tannia,

also, please be aware that memory stays for RAM which is a different concept from disk space.

d

Hi Tannia,
this is a temporary licensing problem. We have noticed that this may happen if the computer is particularly overloaded and as a consequence almost stuck.
However, it’s not affecting the processing.
Also, notice that the log file you sent is empty and the lasterror.mat file has a different date. In other words, no errors occurred.
d

Hi Jackie,

it’s a bit a complex matter, there are many things to discuss.

first of all, in the APS it makes no sense to give asymmetric ranges in the parameters estimation. You are processing connections and you have no idea whether you are going to process A-B or B-A.
secondly, again because you are processing connections, you may want to…[Read more]