Hi,
could some one let me know the details of the pre processing steps for offset tracking (in SNAP 6.0 beta) using ALOS PALSAR - Jaxa 1.1 SLC data downloaded from ESA.
Once you pre-processed your data so you have it calibrated and in range geometry you can start with the coregistering as described in the tutorial: http://step.esa.int/docs/tutorials/S1TBX%20Offset%20Tracking%20Tutorial.pdf
The link does not open
It was outdated, I replaced it: http://step.esa.int/docs/tutorials/S1TBX%20Offset%20Tracking%20Tutorial.pdf
Dear sir! Do you use the offset-tracking method to alos-2 data? Can s1tbx solve the slc data?
The principle is the same. Coregister the two images and apply the offset tracking. SLC/L1.1 products are supported by SNAP.
If you want to use Sentinel-1 data, I advise to use GRD products instead of SLC. You can simply coregister them and the file size is considerably smaller.
A very nice tutorial is given here: https://www.asf.alaska.edu/asf-tutorials/data-recipes/glacier-velocity-tracking/
If you want to stick to SLC, you need to apply a bit more steps before the images are usable:
Use the S1 Tops Coregistration instead, select the desired Swath and bursts (described here) and then apply TOPS Deburst. This creates a Stack of two SLC images.
Thank you sir! I will have a try.
Dear sir!Is the offset-tracking method suitable for seismic deformation?
usually youu define a small area in which you expect the offset (e.g. a glacier). I don’t think the approach works well on a full image. Maybe you want to create an interferogram instead?
You can use this tutorial: http://step.esa.int/docs/tutorials/S1TBX%20TOPSAR%20Interferometry%20with%20Sentinel-1%20Tutorial.pdf
Here you find nice explanations on how it can be interpreted: https://topex.ucsd.edu/chile/
Ok,than you very much!