Groups – Activity – Vinay Gaddam

antig replied to the topic Noisy lines in the forum Sarproz Forum 6 years, 2 months ago

Thank You for explanation.

Yuxiao replied to the topic Noisy lines in the forum Sarproz Forum 6 years, 2 months ago

The message tries to be self-explanatory.

In some cases, one cannot achieve a perfect “burst alignment” for TOPS. Burst alignment here means the following:

Say, line no. 100 of the master image comes from burst 1; then line 100 of slave image must also come from burst 1. If it comes from burst 2 you will see noisy lines in the interferogram…[Read more]

periz replied to the topic PSInSAR Result Analysis in the forum Sarproz Forum 6 years, 2 months ago

overfit is caused by trying to fit too many parameters in few data. the range of v and h does not cause overfit. range of v and h should be chosen depending on the analyzed area

antig replied to the topic PSInSAR Result Analysis in the forum Sarproz Forum 6 years, 2 months ago

What is the “normal” APS values for trend and H if I dont want to overfit?

antig started the topic Noisy lines in the forum Sarproz Forum 6 years, 2 months ago

I extract slaves to my stack. Some images give warnings

IMAGE ALIGNMENT FAILED FOR DATE 20161128!!!
>>>WILL USE AN ESTIMATION HERE<<<<
Interferograms with 20161128 will see noisy lines!!!<<<

so what is correct to do. Remove or keep them in the stack?
It is Sentinel 1 images

antig replied to the topic estimated height output in the forum Sarproz Forum 6 years, 2 months ago

thank You. I’ll keep it mind. error was not main issue. output was and I ‘ll got answer. so I dont upload this error logs

periz replied to the topic estimated height output in the forum Sarproz Forum 6 years, 2 months ago

1. please read the forum rules https://www.sarproz.com/groups/sarproz-group/forum/topic/forum-general-rules/
if you encounter errors u MUST include lasterror and log files to get answers

2. ur data is sparse. exporting a raster of sparse data is not a good idea. use the filter/matrix visualization in scatter plots and export it from there

best

antig started the topic estimated height output in the forum Sarproz Forum 6 years, 2 months ago

Hi

I wanted output estimated H by raster using Extended data export

got error

orthorectifying Height [m]

loading file /export/sille/analysis_home/analyzes/analysis_1570/SUBSET/RESULTS/MATLAB/GeoShifts

An error occurred and was saved in the file lasterror.mat, directory /opt/sille/tools/sarproz_compiled

If you need assistance, please…[Read more]

periz started the topic Sarproz Updates Server in the forum Sarproz Forum 6 years, 2 months ago

IMPORTANT!!

In the past days we went through an extraordinary maintenance of the online updates server. The server references changed and for this reason you need a new software version to be able to access it. Hereafter we post the new versions that you can use to re-connect to the updates server. The links will be active for 7 days (till Aug…[Read more]

periz replied to the topic full graph coherence generation in the forum Sarproz Forum 6 years, 2 months ago

The log says that file M:ICELANDRESULTSMATLABInSarParam.mat is corrupted.
Unless this is a system/matlab problem (in which case the solution is surely more complex), simply delete the file and try again.
best

mohsen-ebrahimian posted an update in the group sarproz-group 6 years, 2 months ago

hi to all
my study area is in two sub swath in ascending mode S1A data and in one sub swath in descending mode .first time I processed in descending mode in one sub swath, and now i want to process 2 sub swath in ascending mode simultaneously.It is important for me that reference hight point was same in ascending and descending and psc and ps…[Read more]

Yuxiao replied 6 years, 2 months ago

At this moment it is not possible to process two subswath at the same time. I am working on that feature now. For now you can only process the two subswath separately. For combining the data from ascending track and descending track there is the function multi-sensor analysis that you can use.

Q

p.s. next time please post your question as a…[Read more]
mohsen-ebrahimian replied 6 years, 2 months ago

thanks for your response.

periz replied to the topic DEM outside SRTM in the forum Sarproz Forum 6 years, 2 months ago

You can add your own DEM from the coregistration parameters
https://sarproz.com/manual/coreg_param.html
top right button
best

antig replied to the topic DEM outside SRTM in the forum Sarproz Forum 6 years, 2 months ago

thank you

I found that external dem can add in site protsessing stage. Is it correct?
Warnings in corecistration stage have to be ignore? mainly warnings are that SRTM tiles are zeros.

periz replied to the topic Mask for Sparse points selection in the forum Sarproz Forum 6 years, 2 months ago

regenerate the mask file
the file is corrupted

venera replied to the topic Mask for Sparse points selection in the forum Sarproz Forum 6 years, 2 months ago

hi Danielle,

thank you for you help, the problem is solved, but there is a problem related to APS..

Have I missed important settings/parameter?

periz replied to the topic Mask for Sparse points selection in the forum Sarproz Forum 6 years, 2 months ago

Try please to see if this solves your issue: https://we.tl/mDZabGeY6b
Let me know
best

venera started the topic Mask for Sparse points selection in the forum Sarproz Forum 6 years, 2 months ago

Hi there

In site processing module it seems to me that I do have a problem with sparse point selection.

Processing concluded successfully, but the button is still red..

Please find the attached files.

Do you have any advice for me?

Thanks in advance!

periz replied to the topic DEM outside SRTM in the forum Sarproz Forum 6 years, 2 months ago

at the moment no other automatic DEM download is implemented. only SRTM.
you can anyway import your own geotiff DEM in geographic coordinates
best

antig started the topic DEM outside SRTM in the forum Sarproz Forum 6 years, 2 months ago

Hi all

I have AOI outside SRTM area. SARPROZ warn
leggi_srtm: Warning! file /export/sille/analysis_home/analyzes/SRTM/N61E019.hgt is all zeros!!

Does SARPROZ download automatically some additional DEM (ASTER for example) or have to find dem myself?

mahtab replied to the topic different color in resampled version of KML scattered in the forum Sarproz Forum 6 years, 2 months ago

Thanks for your reply.

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Vinay Gaddam

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