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eszter replied to the topic Sentinel-1A co-registration problem in the forum Sarproz Forum 5 years, 11 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 5 years, 12 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 5 years, 12 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 5 years, 12 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 5 years, 12 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 5 years, 12 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 5 years, 12 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 5 years, 12 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 5 years, 12 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 5 years, 12 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 5 years, 12 months ago
Here is the result of ascending data
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venera started the topic PS results in the forum Sarproz Forum 5 years, 12 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 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 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 -
antig started the topic sarproz crashes in the forum Sarproz Forum 6 years ago
Sarproz start crash suddnly. Seemes like some kind of SaRProz->Matlab problem because if I start SarProz I’ll got Warnings
Warning: uiwait is no longer supported when MATLAB is started with the -nodisplay or -noFigureWindows option or there is no display. For more information, see “Changes to -nodisplay and -noFigureWindows Startup Options” in…[Read more]
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antig replied to the topic Noisy lines in the forum Sarproz Forum 6 years ago
Thank You for explanation.
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Yuxiao replied to the topic Noisy lines in the forum Sarproz Forum 6 years 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]
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periz replied to the topic PSInSAR Result Analysis in the forum Sarproz Forum 6 years 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
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antig replied to the topic PSInSAR Result Analysis in the forum Sarproz Forum 6 years ago
What is the “normal” APS values for trend and H if I dont want to overfit?
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antig started the topic Noisy lines in the forum Sarproz Forum 6 years 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 - Load More