DSM generation using TerraSAR-X or COSMO SkyMed with SNAP

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Hi,

I am working on a Digital Surface Model (DSM) generation using either TerraSAR-X or COSMO SkyMed images. I will be using the ScanSAR modality.

I would like to know if there is existing documentation on the workflow and challenges using SNAP.

Unfortunately, the only workflow I have found is for Sentinel-1. From my searching through the web, I found a source that mentions the use of SNAPHU and SNAP for TerraSAR-X, but it does not offer much detail.

Do you know if there is an existing workflow, either documented or described on a website or tutorial?

Thanks in advance for any help.