Same reference in coregistration of multiple S1 TOPS interferograms

[pelias]

how can I have many interferograms all with the same reference?

Actually the default will give at georeferenced geometry a shift of one or a few of pixels misregistration.

In the coregistration step can I use a single reference acquisition for all the pairs (or just the DEM simulation in slant range)?

This way all the terrain corrected interferograms will be ready for multi-interferogram calculations (e.g. stacking, SBAS).

What is currently the preferable way to do this?

I have also read the following but they are not current and conclusive:

Coregistrating more than two Sentinel-1 SLC IW products

Hey @virk_rana does your data stack contain scenes from before March 2015? In this case you still need to perform the EAP correction on your data. The automatic EAP correction was introduced In March 2015, so for all scenes before this date, you still need to perform this manually. Here is the link to ESA’s newsfeed with this information: https://sentinel.esa.int/web/sentinel/news/-/article/sentinel-1-impact-of-eap-phase-compensation-on-the-interferometric-phase-preservation Maybe this causes…

InSAR image coregistration + Stacks

Is there a way to merge multiple 2-image Sentinel-1 stacks too? If I create a stack product (using the Create Stack op) with multiple 2-image stacks as input, the master gets copied multiple times, and the output .dim indicates the master is also a slave.

DEM assisted Coregistration S1 + S2

Hi guys, thank you for you answers. here are some example of offsets I get after terrain correction: middle of roundabout (s1): [image] same, just S2, red crosshair is on the same location [image] now an intersection, S1: [image] same situation, just S2 (crosshair is on the same position): [image] So as you see, it does not work so well. There is an ofsett of approximately 40 meter. The results get slightly better if I perform an automatic coregistration (not the DEM-assisted one).

thank you

[ABraun]

maybe this is part of the answer:

@lveci

The safest way would be to coregister all of the products first but currently you can’t do different combinations of interferograms. We’ll be adding this functionality next to allow selecting the interferogram pairs based on a baseline plot. It would be helpful to hear your use case so we have can make sure it’s covered.

[hriston_bg]

Dear colleagues,
since I’m facing the same situation as described above I’d like to ask if any progress is made towards coregistration/processing to one and same master.

Thank you.