We think that some updates with respect to the previous post can be useful since more than 5 years have passed.
Q: What are the orbits used for Sentinel?
A: You can find useful information in the section 2.5 of this document at the following link:
alpetrucci replied to the topic Manual script for estimating E-W, V displacement in MATLAB in the forum Sarproz Forum 6 months, 1 week ago
Good morning Yunus,
from my experience, at the moment I do the same, i.e. using the multi-sense module or external GIS-based tools to produce the maps of Vertical/EW motion with some spatial averaging.
About the time series, what I do is to apply use the same formula used to derive the maps applied to some specific points, manually.
alpetrucci replied to the topic How to select a same reference point for different projects in the forum Sarproz Forum 2 years, 7 months ago
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]
alpetrucci replied to the topic understanding aps estimations parameters and results in the forum Sarproz Forum 2 years, 9 months ago
usually, the best approach is to keep a quite large set of range taking into account the expected values by considering:
– the characteristics of your AOI (e.g. presence of high rise buildings);
– the type of graph you created (long connections, short connections, etc. )
Once you have a preliminary estimation, you can have a look…[Read more]
I am processing a stack of COSMO-SkyMed data. The coregistration refinement step returned these messages for all the images (i.e. for every couple of images used for the refinement):
ampcorr 20140720-20150808: keeping previously generated files!!
cull_points 20140720-20150808: 713 input, 192 output
What is the meaning of these…[Read more]
alpetrucci replied to the topic Combine different geometries for decomposition of LOS motion? in the forum Sarproz Forum 4 years, 7 months ago
Hi Cecilia, in order to better understand the issue, could you please attach a picture of the Asc and Desc results (PS) you imported in the decomposition module?
the APS module, is the “core” of the multi-image InSAR process (say PS, QPS analyses). As you probably know, to extract as more information as possible from your dataset, all images need to have the same technical features (resolution, incidence angle, polarization, etc.).
Also the number of images is very important. If you have only…[Read more]
1) Here my personal suggestion about your first question. The best way to understand the goodness of your results (both preliminary and final) is based on the knowledge about the process you are investigating. You should address your specific case study (landslide? subsidence? localised structural issues?) being driven by a general…[Read more]