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Hello

I have a question about APS estimation. I work with 19 TerraSAR-X images in HH polarization. For APS estimation, I have been running some test with different threshold of height estimation ([-5 5],[-10 10],[-15 15], [-25 25], [-30 30],[-35 35]). The results are as shown in the attached word.

I would like to ask you how can we understand…[Read more]

I already try the initial cross-correlation, but it is still failed. Please help what i have to change again in coreistration parameter?

Thanks

The fact that the operation cannot be performed and no errors are reported,
it does not reveal any bugs,
it simply means that the default parameters you are using are not appropriate for your case.
Firstly, you should check the forum.
A quick search would you lead you e.g. the the following…[Read more]

Hello Dr Periz, i already use the 15_07_19 Sarproz version but the coregistration process still failed. here i attached the log file. Unfortunately the is no lastaerror files.

Thanks

Hi Aleksandra,
if you get an error, send us the lasterror.mat file and the log file. Periodically we have troubles with forum files attachments, but if you make a .zip file containing mat and log files, you should be able to attach it.
Concerning the bridge monitoring, it’s a non-standard analysis which requires some work. Usually we don’t provide…[Read more]

Hi Fatchur,
yours is not the last update. Please update the sw using the manage version module and try again. Should you get again an error, zip lasterror and log files before uploading them
best

Your comment does not match this discussion, which is around an urban area.
The distribution of the residual height should be at zero, which means, the reference point is close to the external DEM you used, and if you are in an urban area (and the DEM is in fact a DTM), this implies it’s on the ground (not on buildings).
But you are on the…[Read more]

Hello, I am confused about the reference points selection. I am processing sentinel data. First, I used the auto reference point. The distribution of parameters is great (peak at zero). However, based on Google Earth, the selected reference point is located on top of the mountain range. As I understand, the reference needs to be on the ground. The…[Read more]

From Minos:
“Hello Marisa,
I had the same problem once.
What you have to do is the following
Go to: C:UsersAppDataLocalTempmcrCache8.3main_… and delete the folder.

You can find more info here:
https://www.sarproz.com/groups/sarproz-group/forum/topic/issue-related-to-mcr-component-cache/

Keep in mind that you have to be able to see “hidden…[Read more]

Thank you,
we have fixed it

The _mask file tells you where the phase was unwrapped and where it was not
the image with no scale is a bug. we are going to upload soon a fix
best

hello i have few questions. i unwrap the interfrogram suing sparse LS LP, no mask. i found that there are 2 interferogram product, “date_UW” and “date_mask”. what does this mask refer to? when i export the “date_UW”, and convert to disp or height, i got single color image with no scale. if there is no conversion, the inferogram looks good. i had…[Read more]

hello, i have question regarding the flatten option. based the previous discussion, it is used to eliminate ramp? what does ramp refer to? i used the IR but get low coherency, most is 0.6 and below. IP gives me high coherency but it is a force option. what do means by force? should i use IP instead of IR? i am studying movement along a thrust…[Read more]

I do not know what you mean with “phase ambiguity parameter”.
The phase ambiguity is pi=3.1416… radians
If you convert the phase to height or displacement, you will get the corresponding values. Check any insar paper for the formulas.

Hello
I’d like to ask one question about phase ambiguity parameter, How the phase ambiguity parameter is calculated in the network?

https://www.sarproz.com/groups/sarproz-group/forum/topic/east-west-and-up-down-time-series/