SARPROZ ©

This is not a coregistration error, it’s a java problem
are you sure you are starting matlab from the pcodes directory?

Thanks so much for your response.

EXT folder, there is a directory for each image
inside those directories you can find a text file yyyymmdd.meta (careful, there is also a .meta.mat file).
You can derive R0 from the Range Start Time that you find there.
otherwise, type “fast” in matlab (without quotes) hit enter and then:
R0=leggi_img(handles.SiteParam.DirSite,Master,{‘R’})

Sure, a have attached a sample kml file.
Thank you!

At the moment you can use a polygon at a time and generate 2 masks. Then, either you merge them in matlab or you can use the scatter plots and say “mask1 or mask2”. if you send us the kml, we’ll improve the code for importing MultiGeometry objects

Hi,
the DEM file didn’t have a coordinate system attributed. I corrected that, it is in WGS84, but I still get the same error. DEM visualization is ok, but I can’t check the external DEM in SAR coordinates. I get an “empty matrix” message (I am attaching the site file as well). Besides, I get several “out of memory” messages. I already decreased…[Read more]

The coregistration refinement is doing 1 single operation:
it is taking the external DEM and it is using it to resample the image by correcting topographic distortions.
In other words, the sw is not going to re-process the cross-correlation between patches, this was already done during the initial co-registration (and this is the reason why it…[Read more]

To check if the process was well concluded,
you just need to plot the external DEM in SAR coordinates with the “view parameters” function.
Also, to check your original DEM, you should plot it with “DEM visualization”.
But surely the process failed, if you look in the log file, you got a considerable amount of errors.
Probably your DEM is in UTM…[Read more]

Hi Cecilia, in order to better understand the issue, could you please attach a picture of the Asc and Desc results (PS) you imported in the decomposition module?

Dear Leewoneung,

I am SARProZ team leader in Beijing and I think we have met begginning of this year for sw training.

Then I want to confirm your question. Do you want help to check the reason why you got uplifting value in your result, right?

From attaced screenshots I think the processing is not stable and reasonable but we need very detailed…[Read more]

I took two points spatially close (ca 200m distance). Because the area per se have not so many points.
Unfortunately, I do not know anyone close that can help me. I am doing this project basically from zero.
But ok thanks I will try to improve the resolution then

A first question would be: did you select points representative of the area where they are located or did you choose outliers?
Secondly, the software decomposes asce/desce velocities only on AD pairs. AD pairs are points located closely in A/D datasets. The sw selects them based on your inputs (AD processing) and based on the corrected shifts…[Read more]

sorry I forgot the image

Let’s see. In the figure attached , there is the East -West velocities from the module. Blue is positive so East. So far so good.
But I took one descending point which has final trend of -20mm/year (the “typical” value you get in the small area processing), and one ascending point value of -7mm/year. So both negative.
The points are located in a…[Read more]

Can you please post an example?