SARPROZ ©

Thanks, co-reg was successful after changing param.

Perhaps you can read the messages given by the software: why it is not working?

Dear dp,
How we can install new version! I tried use MANAGE VERSION but it doesn’t work.
Nader

hi Sandersax,
if you want to apply spatial phase unwrapping, please download the last sw version, a bug was found and fixed.
dp

hi Sandersax,
to work on a single interferogram, use this module: http://sarproz.com/manual/insar_analysis_site.html
to see a description of insar parameters, check this http://sarproz.com/manual/insar_params.html
The idea is that, to convert the phase into mm, you have to unwrap the interferogram
so, if you check the “unwrap” option, then you can…[Read more]

Ok, I’ve visualized it and it is wrong, all zero values. The command prompt tells me this:

” wrong saturation values!” Must be NaN < Min < Max < NaN”

I reselected the DEM, I manually re-wrote the GCP and projected again the DEM amplitude in SAR coordinates. Still seeing all zeros in SAR coordinates.

What should I do?

Thanks,
Santiago

“Site Processing”–>[Visulalization tools]–>”View Parameters”–>scroll the list to “Ext. DEM height”–>pick it–>Click “Plot”

Dan,

I’ve checked it with the DEM Visualization tool (screenshot attached), finding no NaNs, but according to the manual this displays the DEM in Geo coordinates, which file corresponds to the DEM in SAR coordinates?

Santiago

Santiago,
you need to plot and check the DEM in SAR coordinates

I enclose my log file,

I remember that when you warned me about NaN values in my DEMI checked it and I converted them to zero.
When I made that correction I restarted the process again from the external DEM selection to make sure it was updated.

Santiago

If it takes too long,
as I previously explained, it means that there is something wrong.
You did not include the log file, it seems the error is happening in a file that has been modified in the last version.
Anyway, by remotely sensing you case, I think your DEM is containing NaNs.
If you remember, I told you to check it, since your DEM is not…[Read more]

Lasterror.mat was not attached in the previous message,
S

Hi dan,

Then it is desirable to ckeck it even if estimating displacement only (from what you say I interpret that it is used to remove the topographic phase reding it from my DEM, which in this case is a high-resolution one).

I have tried to re-process my dataset again with this option checked, and apart from taking too long (~8 hrs) I can’t…[Read more]

Checking External DEM means removing a phase component proportional to what is written in the external DEM file.
So, this is not directly related to movement.
However, you estimate the movement from phase time series. If you remove or not remove a component from the phase values, clearly you are changing your data. As a consequence, the estimated…[Read more]

Hi Nader,

yes, there are some residual fringes, when Yuxiao will have time he will improve his code.
In the meanwhile, as previously said, you can still process your data. There are several ways to remove or at least reduce spurious fringes.
The first thing to do is using the residual fringes estimation and removal module: did you do it?…[Read more]