@zahrag75
Active 9 months, 4 weeks ago-
sjhossene replied to the topic Small area geocoding panel in the forum Sarproz Forum 4 years, 8 months 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 4 years, 8 months 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 4 years, 8 months 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 4 years, 9 months ago
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periz replied to the topic Sentinel-1 interferograms processing problem in the forum Sarproz Forum 4 years, 9 months ago
You are using the Sparse LS unwrapping algorithm. Probably you are using all available memory.
Please use the Task Manager windows application to see if you used all memory and/or if the Sarproz main application is running or not.
if you have resources issue, multilook your interferograms to save memory
best -
chronomanz replied to the topic cumulative displacement isn't accuarte in the forum Sarproz Forum 4 years, 9 months ago
hi prof,
understood. tqvm
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sjhossene replied to the topic Sentinel-1 interferograms processing problem in the forum Sarproz Forum 4 years, 9 months ago
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sjhossene replied to the topic Sentinel-1 interferograms processing problem in the forum Sarproz Forum 4 years, 9 months ago
Hello
I got a problem !!
On site processing
In the «InSAR processing»
In the «Interferogram processing»It only goes up to 25% and will not change !!
thanks
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periz replied to the topic cumulative displacement isn't accuarte in the forum Sarproz Forum 4 years, 9 months ago
In the attachment you see the difference between calculating the cum disp from the data or from the model (the drawing is made by hands, but the concept is that the smart filter results in a smoothing of the data).
We have chosen to calculate the cumulative displacement from the model. It’s a choice, that does not mean it’s the truth.
If you want…[Read more] -
chronomanz replied to the topic cumulative displacement isn't accuarte in the forum Sarproz Forum 4 years, 9 months ago
hello prof,
i have almost similar question. i used Smart5 with Small Temporal Baseline image graph on 6 images (which is less than u suggested for its robustness; in message #3231) to detect subsidence
obtained results from 2 weeks baselines are:
weeks: 0 2 4 6 8 12
a)…[Read more] -
periz replied to the topic Small area geocoding panel in the forum Sarproz Forum 4 years, 9 months ago
Def. trend = deformation trend [mm/year] (or velocity or annual rate)
Cum. disp. = cumulative displacement [mm] (it’s the displacement at the end of the time series minus the displacement at the beginning. it’s calculated on the model, neglecting possible residual -not modeled- displacement)The colored dots in your picture show the deformation…[Read more]
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sjhossene started the topic Small area geocoding panel in the forum Sarproz Forum 4 years, 9 months ago
Hello colleagues
What’s the difference between the following 5 numbers?
What is the annual rate?
What is the cumulative annual rate?
Which one does the graph represent? -
periz replied to the topic Rg Slope aclaration in the forum Sarproz Forum 4 years, 9 months ago
Hi David,
in that plot you can see the red point indicating the location of the pixel you are observing
the blue line is a line connecting the satellite with the ground point
the black line is the local ground profile taken from the DEM you loaded (SRTM by default).
In principle, this is what is plotted, independently from whether it is true or…[Read more] -
periz replied to the topic method PSI (STAR 1 sensor) in the forum Sarproz Forum 4 years, 9 months ago
Hi Mohsen,
thank you for your question
To quote Sarproz (in a scientific publication), please cite this paper: https://www.sarproz.com/wp-content/papercite-data/pdf/perissin-rsiwpct2012.pdf
To quote the technology (methods/steps and so on) please cite this website.
In a scientific paper you can cite both of them
best -
dsanchezalamo started the topic Rg Slope aclaration in the forum Sarproz Forum 4 years, 9 months ago
Hello, I would like to get a better understanding on analyzing Rg Slope Button in Small Area Processing –> Geocoding. My problem is when I look the Ground profile and the Line of Sight in the graphic, I obtain a line that apparently is impossible to get because the line of sight cross the ground profile twice. How can I understand the graphic?.…[Read more]
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mohsen-ebrahimian started the topic method PSI (STAR 1 sensor) in the forum Sarproz Forum 4 years, 9 months ago
hello
What is the main article that describes the method PSI (STAR 1 sensor) in SARPROZ ? I mean an article that can be cited, also with a flowchart and etc
best regards -
periz replied to the topic DEM Error in the forum Sarproz Forum 4 years, 9 months ago
https://sarproz.com/manual/choose_dem.html
The tool automatically downloads SRTM files from internet
If anything fails, a message is printed but the tool
does not stop runningIf a SRTM file is not found, it is created and filled with zeros
To re-download a file that was filled with zeros, delete it (the software will warn you if a
file filled…[Read more] -
mehrnoosh started the topic DEM Error in the forum Sarproz Forum 4 years, 9 months ago
Hello
one month ago, I worked with SARPROZ on TerraSAR-X images in Tehran area. everything was ok. But Now, I faced with this message for DEM.
leggi_srtm: Warning! file D:Tehran..SRTMN35E051.hgt is all zeros!!
leggi_srtm: Warning! file D:Tehran..SRTMN36E051.hgt is all zeros!!
This can not downloag srtm and the value of them is…[Read more]
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bridgetwang replied to the topic How to select a same reference point for different projects in the forum Sarproz Forum 4 years, 10 months ago
Thank you very much! I’ll try as you recommended 🙂
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alpetrucci replied to the topic How to select a same reference point for different projects in the forum Sarproz Forum 4 years, 10 months ago
Hi Bridgetwang.
If you create 3 different projects, it means that you are going to use 3 different Master images for the Coregistration step. For this reason, the final matrix of the coregistered images, such as all the parameters like the reflectivity map and other data will be very similiar but not identical. This is also true for the…[Read more]
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