Selection of Sentinel 1 IW images for Interferometry

[Ailin]

Hi,

A simple question I think:
Is it possible to select different sub-swaths from different Sentinel 1 images for interferometry? For example, combining Sentinel 1 A and B data (since they have small temporal baseline, 1 or a few days) but the same area is covered by different subswaths.
My intention is to create a DEM over a mountain area.
Thanks!

[ABraun]

unfortunately, for interferometric applications this is not possible.
Please find more information here:

Temporal baselin

consider these two as different: revisit time: The time a satellite is able to acquire an image over a certain area. This can be of different tracks (flight paths), different looking directions or different viewing angles. repeat frequency: this is defined as the time a sensor needs to cover an area at the exact same track. If you want to do interferometry you need a pair of these. Interferograms result from stereo images while their perpendicular baseline is exactly known. This baseline h…