SARPROZ ©

Hi Ivana,

first of all, QPS is a title which we used in a paper. However, as you have seen, Sarproz does not allow straight “PS” or “QPS” approaches. In fact, one can choose among many different options:
a. Images graph. The Star graph is adopted for PS-like approaches. For other approaches, you can choose the images graph better suiting your…[Read more]

Good we have analyzed and solved all matters.

1. if in a dataset of 15 images there are 2 or 3 bad images with high shifts, it is useless to process all of them with non-standard parameters: firstly, one has to coregister the dataset with standard parameters, after that one can deal with the faulty images one by one searching for the proper way…[Read more]

1. “Size inputs must be integers” never happened to me before. please let’s have a remote session, if the image is corrupted we need a better check with consequent message.
2. “corregistrated slaves were shifted directly in the image where Slaves Extraction is stopping now” don’t know what you mean
3. Higher Delta and Coarse Xcorr usually sol…[Read more]

At this moment the preliminary geocoding options are:
– keeping the orbits as they are
– using an automatic way through an external DEM (which is done just comparing the reflectivity map with the synthetic amplitude)
– using a manual ground control point

Since the software was initially designed for high-quality high-resolution urban-structural…[Read more]

The stratification option is used to estimate a correlation between APS and elevation (DEM).
If you work in a mountainous area and if you have coherent point at different altitudes, you can use it and it should help compensating the vertical stratification of the APS.

DSF is the downsampling factor of the final APS. R is the length of the…[Read more]

Hello,

I would like to ask what are the other parameters in this line:

– stratif – should it be used for ionospheric compensation (in case of L-band data)?

– R and DSF – I understand that it is something like the “smoothness” of the estimated atmosphere; however, why are two parameters and in what units are they?

Thank you,
Ivana

You are correct.
Sarproz is also doing some further checks. E.g. in the recent releases it tells you explicitly if there was any kind of precipitation in the date chosen as Master. It’s important to avoid any possible source of errors in your Master image.
Also, it would be a good practice to chose the Master image in winter, when the atmospheric…[Read more]

Hi Ivana
This is the logic behind Sarproz: it firstly estimates the center of the scene, and it gives you an area around the center with a given radius. If you want to move the area, you have to shift the coordinates of the center. Then the extension is chosen either by changing the radius, or by inputting manually the desired final size of your…[Read more]

Dear Dr/Mr Periz,

I have followed the same steps as mentioned in http://www.sarproz.com/publish/notes1.pdf. As i am not able to connect to internet (since my system is connected via iisc proxy), i unchecked the function “ext orbits”. thereafter i used set orbits function and read the master and slave images with pre-defined settings. Now i am at…[Read more]

Dear Dr/Mr Periz,

I have followed the same steps as mentioned in http://www.sarproz.com/publish/notes1.pdf. As i am not able to connect to internet (since my system is connected via iisc proxy), i unchecked the function “ext orbits”. thereafter i used set orbits function and read the master and slave images with pre-defined settings. Now i am at…[Read more]

it looks correct, but you have to unpack the files
if anything is not in the right place, the sw will tell you what he searches for

If you believe you have the correct orbit file, in the same level of your data folder, create a folder by the name of “ORBITS”, and put your orbit file in structures like this:

ORBITS/ENVISAT/yyyymm or
ORBITS/ERS1/yyyy or
ORBITS/ERS2/yyyy

where yyyy is the year and mm is the month of your orbit file

But you must make sure you have the correct one

Dear Sir,

What you said is correct. Yy system is using a (iisc) proxy to connect to internet.
I cannot connect to internet by VPN right now. i will try it later.

I am trying to connect to esaftp.dfd.dlr.de, but it is asking the user name and password to retrieve the files. from ESA, i have downloaded the orbit files earlier. can i use the same…[Read more]