Multilooking SNAP

[Anton_Gorshkov]

Hello, with interferometric processing you need to perform the function of multilooking?

[falahfakhri]

Please take a look at this

Image with a resolution of 20x20 m

Multilooking reduces both the resolution and pixel-size. Do terrain correction to the map projection of your liking and select a pixel-spacing of 10m (for example) and see if that works for you.

[Anton_Gorshkov]

Thank you, I read it. I am interested in the question of whether the multilooking function is mandatory for interferometric processing?

[ABraun]

multilooking is not mandatory for InSAR processing. Especially for PSI it reduces the chance on finding suitable dominant scatterers.

How to prepare Sentinel-1 images stack for PSI/SBAS in SNAP 5

I also understood that multilooking reduces the chance for getting suitable persistent scatterers: As the pixel size increases, the chance that there is one dominant scatterer which exceeds all others in this pixel is reduced. So multilooking is not prohibited but not necessarily contributing to good results.

[zzl]

Hi dear @ABraun. I was tried to change parameters SLC to Multilook function after that Interferometric-Filtering- Goldstein Phase

Filtering process, but didn’t change look view of my coh, phase. What is did wrong, please can you explain to me?

[ABraun]

looks like your interferogram is half empty, please check the output of the coregistration.

[Shadi1]

I have got similar problem. The splitting slaves python script from snap2stamps tool only splits a certain number of bursts (that for surely I have not control over yet) instead of splitting an entire subswaths by default