SARPROZ ©

It’s not necessary to choose a specific reference point for calculating the phase difference between two images. The zero phase can be arbitrary. However, a reference point is required to interpret the phase. So, you have this option in the view/export extended parameters module. We will add it later on also in the single interf processing module,…[Read more]

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]

https://www.sarproz.com/groups/sarproz-group/forum/topic/cumulative-displacement-isnt-accuarte/

Hi Anti,
you can find several discussions about the smart function in sarproz. Here some…[Read more]

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]

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]

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.

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]

you are plotting them together, you are not decomposing them
please download the last version of the software and use the AD grid
best

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]

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

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]

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

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]

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]

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]

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

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 running

If 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]

zoom in, you will see it’s sparse
best