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periz replied to the topic Phase unwrapping after APS removal in the forum Sarproz Forum 4 years, 7 months ago
Hi Eva,
you are using the sw in a way we did not think of. Now (it’s an option we introduced about 8 months ago), you can remove the APS from interferograms (in the InSAR module) at the time of exporting your results (which means, after processing them). [in fact, this option is present also in the view/export extended parameters module] In other…[Read more] -
periz replied to the topic cumul.disp in the forum Sarproz Forum 4 years, 7 months ago
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periz replied to the topic No linear model in the forum Sarproz Forum 4 years, 7 months ago
Hi Anti,
you can find several discussions about the smart function in sarproz. Here some…[Read more] -
periz replied to the topic Orbit heading in the forum Sarproz Forum 4 years, 7 months ago
Hi Antig,
sun-synchronous near-polar orbits are almost parallel to the north-south direction. However, both when going up (ascending) and down (descending) the satellite path is slightly squinted to the west (as the earth rotates). if you draw this on a paper, and if you take the south direction as reference, u will see those angles (that you…[Read more] -
periz replied to the topic Big dataset processing in the forum Sarproz Forum 4 years, 8 months 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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periz replied to the topic E-W, U-D decomposition in the forum Sarproz Forum 4 years, 9 months 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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periz replied to the topic E-W, U-D decomposition in the forum Sarproz Forum 4 years, 9 months 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] -
periz replied to the topic E-W, U-D decomposition in the forum Sarproz Forum 4 years, 9 months 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 -
periz replied to the topic E-W, U-D decomposition in the forum Sarproz Forum 4 years, 9 months 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] -
periz replied to the topic Small area geocoding panel in the forum Sarproz Forum 4 years, 9 months 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 -
periz replied to the topic Small area geocoding panel in the forum Sarproz Forum 4 years, 9 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] -
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 -
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] -
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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periz replied to the topic Rg Slope aclaration in the forum Sarproz Forum 4 years, 10 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, 10 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 -
periz replied to the topic DEM Error in the forum Sarproz Forum 4 years, 10 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] -
periz started the topic Sarproz New Servers in the forum Sarproz Forum 4 years, 11 months ago
Dear all,
here you can find the new Sarproz versions able to connect to new Email and Update servers:
pcodes https://my.pcloud.com/publink/show?code=XZh9ERkZIAvX8J9CLgu304vwAL1kvzAzdczy
win compiled https://my.pcloud.com/publink/show?code=XZxCERkZAfeFgy8KvxzhneuX6MaGaf7tGWrk
lin compiled…[Read more] -
periz replied to the topic APS estimation in the forum Sarproz Forum 4 years, 11 months ago
zoom in, you will see it’s sparse
best -
periz replied to the topic Sentinel-1 incidence angle in the forum Sarproz Forum 4 years, 11 months ago
lat, lon, h (latitude, longitude, height) are the coordinates of the point where you want to calculate the incidence angle
Img is the image relative to the incidence angle you want to calculate
DirSite is the directory of your project
if you use sarproz in matlab, use the interface to load your project
then type “fast” and hit enter
the software…[Read more] - Load More