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hardycross0330 joined the group sarproz-group 4 years, 12 months ago
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edgardocasanova joined the group sarproz-group 5 years ago
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bridgetwang replied to the topic Big dataset processing in the forum Sarproz Forum 5 years ago
Thank you very much for your rapid and detailed answers!
1.
Cons: if your area is affected by temporal decorrelation/changes, keeping long temporal baselines will decrease the overall coherence.
For the cons you mentioned, I wonder if I individually corigester let’s say 50 images ; On the other hand, I select the same 50 images from the 280…
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periz replied to the topic Big dataset processing in the forum Sarproz Forum 5 years ago
when I have a big dataset of 280 images, and want to process it in several subsets, can I coregister all 280 images one time, and then just select less images to form differenct subsets?
you can, it’s your option. Pros: all subsets will share the same master, so, pixels are directly comparable, you can merge/analyze results and have the full…[Read more]
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bridgetwang replied to the topic Big dataset processing in the forum Sarproz Forum 5 years ago
Please find the attached error files, thanks a lot !
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bridgetwang started the topic Big dataset processing in the forum Sarproz Forum 5 years ago
Hi,
I’d like to ask when I have a big dataset of 280 images, and want to process it in several subsets, can I coregister all 280 images one time, and then just select less images to form differenct subsets?
Is it correct that just keep the images I want in ‘DataSet.txt’ to get the subset combination? I’ve tried by deleting half of the dataset…[Read more]
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pavithra joined the group sarproz-group 5 years ago
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periz replied to the topic E-W, U-D decomposition in the forum Sarproz Forum 5 years ago
1. check here https://www.sarproz.com/groups/sarproz-group/forum/topic/combine-different-geometries-for-decomposition-of-los-motion/
2. e-w, u-d velocities can be exported from the multisensor module
3. check 1.
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sjhossene replied to the topic E-W, U-D decomposition in the forum Sarproz Forum 5 years ago
Hello professor
Thank you for your quick response and accurate.Please let me ask you three questions in this regard
1- How can we calculate time series changes along east -west and vertical velocity for a given point?
2- Is not possible to export e-w velocity and vertical velocity in Multi- Sensor Module or other section of SARPROZ?
3- What…[Read more]
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periz replied to the topic E-W, U-D decomposition in the forum Sarproz Forum 5 years ago
Hi,
for some reasons it was not recorded if your dataset was ascending or descending.
We now added the possibility to manually fix this missing info.
Later today or tomorrow update again your sw with the last version.
follow these steps:
1. open the multi-sensor module
2. load the asce and desce TS objects.
3. if the pass is missing (3rd field)…[Read more] -
sjhossene replied to the topic E-W, U-D decomposition in the forum Sarproz Forum 5 years, 1 month ago
Hello professor
Thanks for your quick response.How can I decomposing them?
I downloaded the last version of the software today and did these steps to to estimate the vertical and E-W components.1- Imported TS objects for AS&DS tracks and loaded them in the multi-sensor module. In this step PASS and Track in upper table are empty!? while PASS…[Read more]
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periz replied to the topic E-W, U-D decomposition in the forum Sarproz Forum 5 years, 1 month ago
you are plotting them together, you are not decomposing them
please download the last version of the software and use the AD grid
best -
sjhossene replied to the topic E-W, U-D decomposition in the forum Sarproz Forum 5 years, 1 month ago
Hello professor
Thanks for your quick response.
That is true.
These values are along LOS. I generated TS objects for AS&DS and then loaded them in the multi-sensor module and combined them to estimate the vertical components.Figure A shows combination of Ascending-Descending TS objects.
And Figure B shows combination of Ascending -De…[Read more]
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periz replied to the topic E-W, U-D decomposition in the forum Sarproz Forum 5 years, 1 month ago
Those values are not vertical, they are range displacement, which means, along the LOS, inclined w.r.t. the vertical.
Please read well the basic theory of SAR.
if you generate TS objects, you can load them in the multisensor module and combine them to estimate vertical and horizontal components
range movement can have opposite signs in asce/desce…[Read more] -
sjhossene started the topic E-W, U-D decomposition in the forum Sarproz Forum 5 years, 1 month ago
Hello dear colleagues
one question
The following figures show the deformation evaluation of the 2 salt diapirs in the ascending and descending tracks.
Why are the values inverted in two ascending and descending tracks ?The following figure 2 shows Vertical Velocity Displacement along Ascending and Descending tracks
thanks in advance
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periz replied to the topic Small area geocoding panel in the forum Sarproz Forum 5 years, 1 month ago
At the moment there are no distance learning courses.
We are working to set up a training school in Italy. We should be able to advertise a first course in 2020.
There should be a chance to have a course in Tehran though. We’ll let you know -
sjhossene replied to the topic Small area geocoding panel in the forum Sarproz Forum 5 years, 1 month ago
Hi
Thank you for your quick response.
How can I attend courses or can I upgrade one at my university?
Are there no distance learning courses? (Webinar?)Best
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periz replied to the topic Small area geocoding panel in the forum Sarproz Forum 5 years, 1 month ago
a full answer to your question would be long. this is what we teach in training courses (taking one would be very good for you. you can try to promote one in your university).
here a short answer:
1. as a default, estimate only height and linear deformation trend. keep the default range values
2. when the processing is done, study well figures and…[Read more] -
sjhossene replied to the topic Small area geocoding panel in the forum Sarproz Forum 5 years, 1 month ago
Hi dear colleagues
I have a basic question about “parameters range” in “APS Estimation” or”processing parameters“.
In the “Multi-Image InSAR Processing” section, when i selecting “APS Estimation” , on what basis should values be selected in1- Linear trend (On what basis parameters range should be chosen?)
2-Hieght (On what basis par…[Read more] -
gcorral joined the group sarproz-group 5 years, 1 month ago
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