SARPROZ ©

Hi Farnoosh,
some comments below:

1. in the software manual, you can check how the software can ingest external DEMs at the paragraph “1.4.2.1. External DEM Selection”
2. probably the easiest way for you is to create a geotiff DEM (with an other software) and import it in Sarproz
3. anyway Sarproz can manage TDX bistatic pairs and respective…[Read more]

Milan:
the data were stored in a flipped format. Now the data extractor has been generalized and the image has the right orientation.
I saw the big orbital data errors. However, we did not test the phase flattening yet.
Let me know if you still get big ramps. If so, we’ll also generalize an orbit correction.
Pcodes and compiled version for windows…[Read more]

For those who cannot use the “Manage Version” module to download the update, I paste here temporary links for direct download:

– pcodes: http://we.tl/H5B9HSLNfZ
– compiled for linux: http://we.tl/wW9CEUMhnY
– compiled for windows: http://we.tl/FO7E90lyZK

Hi Ana,

at this moment the “super-MST” is not implemented yet. The options are those you can see in the menu (star, mst, delaunay, small temp baselines, full graph and so on). However, as you can see you have the option to load your own graph. So, you can design yourself a kind of “super-MST”. You just need to learn the format of a graph. For…[Read more]

CNU_lee: at this moment you cannot mix gamma RSLC images with new SLC images… in principle it’s possible but at this moment the sw is not considering such option… we will implement it in the future, but for now I suggest you to find a different solution…

Milan: I see such thing for the first time. Probably the orbital data are flipped. Can…[Read more]

right, this works:
RS2_OK55634_PK527325_DK467628_F23_20140808_163838_RST2_VV_SLC

sorry, the string _RST2 must be included but the directory must also terminate with _SLC
if you rename it e.g. RS2_OK55634_PK527325_DK467628_F23_20140808_163838_VV_RST2_SLC it will work

Hi Eric,
you have a dataset of mixed multiple polarizations (HH single pol and HH/HV multiple pol). As a consequence, the only choice is using HH. Would you have had a choice, the suggestion is never to use cross-polarizations for multitemporal analyses. In the future we may include polarimetric techniques and make use of all channels, but this is…[Read more]

WINDOWS USERS:
there was a hidden bug in the use of PSFTP.EXE which was preventing from downloading new versions (in windows).
Please find the new pcodes here: http://we.tl/W0qiUVVYm3
And also the new compiled version for windows here: http://we.tl/TtmUbku9ym
Many changes are going on, consider it as a beta version.
In case of new bugs, you can…[Read more]

Thanks!
it was indeed a bug. But in the future we’ll remove the fine APS processing in the MISP module, because it’s not really needed.
The updated version (which is in fact coming with many new things -check the updates list!-) is already online.
cheers

Based on the Radarsat-2 data we processed up to now,
the software searches for directories containing the string “_RST2”.
I suggest you at this moment to manually rename your directories including such string.
We may change the code later when we will confirm the naming convention.

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]

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]