S1 TOPSAR Interferometry on S1TBX - Further improving interferogram coherence

[ABraun]

I asked myself the same question some days ago - but unfortunately didn’t come to a solution so far:

Interferogram averaging for DEM generation

I wondered if it’s possible (and reasonable) to calculate multiple interferograms and average them for later phase to elevation calculation. I have Sentinel-1 A/B interferograms (6 days temporal baseline each) in an arid region with high coherence. I would like to exclude atmospheric effect by a combination of interferograms. But I struggle to do it in SNAP. When would be the best step to do the averaging? Directly on the filtered interferograms (I doubt that this makes sense) After unwrappi…