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periz replied to the topic coregistrate island in the forum Sarproz Forum 6 years, 2 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 6 years, 2 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 6 years, 2 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 6 years, 2 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 6 years, 2 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 6 years, 2 months ago
we do not answer such messages.
read the forum rules. -
eszter replied to the topic Sentinel-1A co-registration problem in the forum Sarproz Forum 6 years, 2 months ago
Hi,
I get the same error when trying to coregister S1 images. Did you manage to solve this problem?
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periz replied to the topic APS in the forum Sarproz Forum 6 years, 3 months ago
two possibilities:
1. either the orbit of that image is pretty bad (and what you see there are fringes due to the wrong geometry)
2. or that image is very noisy (maybe because of a storm) and what you see there is the result of noise fitting -
periz replied to the topic 'Undefined function 'gcp' for input arguments of type 'char'.' in the forum Sarproz Forum 6 years, 3 months ago
you miss some of the toolboxes listed here: https://www.sarproz.com/pcodes-instructions/
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antig started the topic APS in the forum Sarproz Forum 6 years, 3 months ago
Hi
I calculated APS and one results look like in picture. I havent seen sutch thing before.
What could be wrong? -
eszter started the topic 'Undefined function 'gcp' for input arguments of type 'char'.' in the forum Sarproz Forum 6 years, 3 months ago
Hi,
I’m new in SARPROZ and I got the following error message for reflectivity map calculation, I use the latest version.
Please help me to solve this issue.Eszter
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antig replied to the topic poor cohernce in the forum Sarproz Forum 6 years, 3 months ago
I used Delunay connection graph and detected seasonal coherence loss. Does it mean that availibiltiy to get data is most worst intefereogram coherence?
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periz started the topic Sarproz Email Server in the forum Sarproz Forum 6 years, 3 months ago
Recent changes in the Sarproz Email Server have caused old software versions not being able to automatically send emails.
To automatically send emails, you need to update Sarproz to the newest version.
Use the manage version module to update Sarproz: https://sarproz.com/manual/manage_version.html
If the software cannot connect to the server, write…[Read more] -
periz replied to the topic poor cohernce in the forum Sarproz Forum 6 years, 3 months ago
if you process your data with the STAR graph,
you look for good and stable targets in time, which usually are also little affected by geometric decorrelation.
You could be in an area with average little spatial coherence but with a few sparse stable targets (like sparse isolated houses in the countryside) and everything would work.
so, when you…[Read more] -
periz replied to the topic PS results in the forum Sarproz Forum 6 years, 3 months ago
Hi Venera,
your APS processing looks good. After that, you have to process more points to get denser results. You can do it either in the MISP or in the GAR (Graph Analysis and Refinement) modules.
Options that you can try in case you cannot get results in your are of interest:
+ using a non-linear model for the deformation (input the number 5 in…[Read more] -
antig started the topic poor cohernce in the forum Sarproz Forum 6 years, 3 months ago
Hi,
Is somthere ideas how calcultate APS in relativliy poor coherence. I calculated intefereogrmms and full coherence maps and APS GRAF show poor coherence between images. Coregistration wet well no additional warnings. First stack had warings, but I increased area and second time was good no warnings at all.
Quiestion is at such Star graph is…[Read more] -
venera replied to the topic PS results in the forum Sarproz Forum 6 years, 3 months ago
Here is the result of ascending data
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venera started the topic PS results in the forum Sarproz Forum 6 years, 3 months ago
Dear developers,
I am processing Sentinel 1 data for small area (5×5 km) from descending and ascending orbits 65 and 52 images, respectively.
Study area is an urban area and I know exactly which building’s foundations are unstable over this area.
However, using Star images graph I didn’t get consistent results and I’ve tried different…[Read more]
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antig replied to the topic sarproz crashes in the forum Sarproz Forum 6 years, 3 months ago
I zipped dumb file, because original was allowed upload
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periz replied to the topic sarproz crashes in the forum Sarproz Forum 6 years, 3 months ago
are you starting matlab with the -noDisplay option? remove it. check the following
http://www.mathworks.com/help/matlab/release-notes.html#br5ktrh-3 - Load More