SARPROZ ©

Hi Prashant,
Yuxiao has been working at the weather data module for the past 2 weeks, rewriting the code and making it stable against changes on the online weather database (the error is caused by some data returned in an unusual format). We will release a new version very soon. Please be patient a bit more.
bests

Hi Prashant,
such an error -as you point out- is affecting a Java command. After a quick search online I found the following:

“Probably for some reason the connection dropped. There are a number of different reasons that can happen, including

system overheating
driver problems with your ethernet card
hardware problems with your…[Read more]

Hi,
I am getting some problem in co-registration of sentinel-1 images. I am attaching log file and lasterror file. I am trying this from more than 15 days. Every-time error comes after downloading weather data. I also checked checked ftp server and everything is fine.

Downloading weather station from http://ftp... Done.
An error occurred and was…[Read more]

Hi Jaroslav,
I assume you are talking about azimuth shifts. That is common for Sentinel and it’s not a problem.
You should not have any coregistration issues.
Moreover, you can put consecutive images in the SLC folder: Yuxiao developed a simple algorithm to merge them, and you can treat them as a whole image.

There are many things you don’t say,
as how you calculated those parameters, what does your dataset look like (in terms of number of images, distribution of acquisition dates/baselines/doppler). then we should check the original parameters as reflectivity, ampl stab ind, spat coher and so on.
anyway, as a general answer, if the spatial coherence…[Read more]

Hello again

Thank You Doctor. I got it. But the Number of selected Points with spatial coherency index is less than ones with Amplitude stab. index.
In my case, most of the points have low spatial coherency.

Result of selected Points using spatial coherency and amplitude stab. indices with the same threshold are attached here.

Hi Mahtab,
the life time is calculated from amplitude time series of good scatterers using this module http://sarproz.com/manual/amp_series_proc.html. The analysis is carried out on the amplitude series of single pixels.
The easiest way is to use the on-off model, then Tin and Tfin (birth and death dates) of targets will be estimated, their…[Read more]

Hi Prashant,
we are working on it.
We’ll send an update soon

Hi Artem,
we are investigating it.
However, it looks like this is not going to generate errors. So, for the moment you can ignore it.
d

I attach a log file

Hi
I am getting problem with co registration. Please help me to resolve the issue. log and lasterror.mat files are attached.
Thank You
Prashant

Hi Jaroslav
sometime in December the SRTM ftp download changed the format and we uploaded the new code on Dec 12.
You have to update your software version. If you cannot use the “manage version” module, write an email to me, and I’ll send you a link
dan

Thank You Periz for your important reply. Is any other way to come out from this problem ? By doing modification in Weather parameter.

Thank You
Prashant

I confirm that the weather data download works.
If it does not on your side, unless you present an error, I am forced to think that it is a network problem between you and the weather database.
About the message you get at the beginning, it is due to a recent licensing issue. It is a temporary problem, do not pay attention to that message.
bye