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Active 5 years, 1 month ago-
periz replied to the topic no linear result in the forum Sarproz Forum 5 years, 11 months ago
Hi Antig,
the non-linear model is a time filter (the movement is smoothed out of the displacement phase). This implies a series of things: the result is more flexible and will match more the displacement phase. If the displacement has a non-linear smooth behavior, the model works great. If the displacement is noisy, the model will be more affected…[Read more] -
antig started the topic Split stack in the forum Sarproz Forum 5 years, 11 months ago
I have ~2.5 years stack coregistrated. If I need it to split 1 year, 1.5 year 2 year , 2.5 year starting latest image.
One possibility is make five indipendet projects but it takes time. Is it in SarProz other possibilities?.
I’ll tried play in temporal baseline time but it works only if master is included(understandably). -
antig started the topic no linear result in the forum Sarproz Forum 5 years, 11 months ago
Hi
I calculated no linear result. Used smart 5. Looking the result I have rised question.
I have two calculated results pixel side by side (pictures). unwrap1 has a peak down after Jul 17. after that graph rase and are quite stable. Graph at unwrap2 near july quite stable down direction and after that stabilization. One of them should be wrong.…[Read more] -
boonwee replied to the topic Unable to "get contents" from Sentinel 1-A data in the forum Sarproz Forum 5 years, 11 months ago
Thank you.
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periz replied to the topic Unable to "get contents" from Sentinel 1-A data in the forum Sarproz Forum 5 years, 11 months ago
You are in Help Mode. Uncheck it from the main window.
Please take the time to read the messages from the software. -
periz replied to the topic Unable to "get contents" from Sentinel 1-A data in the forum Sarproz Forum 5 years, 11 months ago
You are in Help Mode. Uncheck it from the main window.
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boonwee started the topic Unable to "get contents" from Sentinel 1-A data in the forum Sarproz Forum 5 years, 11 months ago
I am currently trying out Yuxiao tutorial 1, I was following the instructions closely but was unable to “get contents” after selecting the data set. This message appeared on the matlab command line (File “D:TX_FLOODDATASET_INFO/DataSet.txt” not found), after which I am not able to proceed anywhere.
Is there anything I am doing wrongly?
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gido replied to the topic Sentinal1 coregistration problem in the forum Sarproz Forum 5 years, 11 months ago
Thank you for your support.
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periz replied to the topic Sentinal1 coregistration problem in the forum Sarproz Forum 5 years, 11 months ago
Hi Gido,
we are investigating the reason (it’s depending on an undocumented update of matlab).
we hope to find soon the solution
best -
Yuxiao replied to the topic Sentinal1 coregistration problem in the forum Sarproz Forum 5 years, 11 months ago
Please refer to this post that discussed the exact same problem
https://www.sarproz.com/groups/sarproz-group/forum/topic/sentinel-1a-co-registration-problem/
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periz replied to the topic csv v Kmz export in the forum Sarproz Forum 5 years, 11 months ago
we were not aware of this situation, we need to investigate it.
please next time spend a bit of time to check spelling and english expressions -
antig started the topic csv v Kmz export in the forum Sarproz Forum 5 years, 11 months ago
there a strange things in exort results.
If I has filtered temproal baseline. Select Dataset->Master and Images selection Btln and BtFin fields.
Then in csv export at file header are ALL image dates, but the data is filtered length. so For example I filter out one date at the beginning then in heater it exist but in data fields not (pictures).…[Read more] -
periz replied to the topic coregistrate island in the forum Sarproz Forum 5 years, 11 months ago
no evident phase jumps
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antig replied to the topic coregistrate island in the forum Sarproz Forum 5 years, 11 months ago
Thank you for your answer
I confused little bit. are there phase jump or not.
Island is quite small (ca 15x30km) and middle of sea. No additional land is availible.
How mask out sea before coregistration or make manual co-registration? Does orbit only is possibility.
it is also Subswath 3 so the farthest Subswat -
periz replied to the topic coregistrate island in the forum Sarproz Forum 5 years, 11 months ago
If you are using Sentinel it can be problematic.
Check the interferograms.
In case, you can manually modify your set of points used for the coregistration and mask out the sea. I do not think anyway that this is the problem. More probably, the problem is the size of the island. Is the satellite footprint including other land nearby the island? If…[Read more] -
antig started the topic coregistrate island in the forum Sarproz Forum 5 years, 11 months ago
Hi
I have to co-coregistrat sar images in island. I was cat AOF as good asi it get, to minimize water area. In coregistration parameteres I used Smart option because in view I saw that points cover island regulary. But additionaly were points on sea also. In coregistration program give warnings that in pair may have phase jumps. My question is…[Read more] -
gido started the topic Sentinal1 coregistration problem in the forum Sarproz Forum 5 years, 11 months ago
Hi,
I have coregistration problem using 10 sentinal1 imagies.
Attached the required file.
Regards
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periz replied to the topic non-linear deformation in the forum Sarproz Forum 5 years, 11 months ago
Hi Eszter,
yours is a particularly complex case.
Non-linear movements can be well estimated with the smart option that you selected. The smart option in fact applies a low pass filter in time. However, given the more degrees of freedom, the smart option requires more images than usual to be robust: 13 is a too low number.
In any case, an…[Read more] -
eszter started the topic non-linear deformation in the forum Sarproz Forum 5 years, 11 months ago
Hi,
I processed 13 S1A images to map the deformation due to an earthquake and possible movements before/after. I followed a tutorial for multi-temporal analysis. As I suppose that the deformation is non-linear, I used the corresponding parameters suggested in the tutorial.
I cannot see any movements on the displacement map, on the other hand the…[Read more] -
periz replied to the topic Sentinel-1A co-registration problem in the forum Sarproz Forum 5 years, 11 months ago
we do not answer such messages.
read the forum rules. - Load More