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InSAR Scientific Computing Environment version 2
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Conversion of high-res DSM into radar coordinates does not work #707

Open falkamelung opened 1 year ago

falkamelung commented 1 year ago

I am trying to process using a high-resolution urban Digital Surface Model (DSM) that includes buildings. Unfortunately, the conversion into radar coordinates does not work, probably because of the near-vertical topography. Here two examples:

image

Is there a switch for this or is ISCE unable to deal with severe lay-over? Possibly ISCE can't deal with lay-over at all?

If ISCE2 does not have this it certainly would be a nice feature for NISAR/ISCE3 as this capability is required for infrastructure monitoring (you need to use a DSM to estimate the topographic residual which is needed yo precisely geo-locate a pixel).

piyushrpt commented 1 year ago

I don't think there is any public software can handle such extreme layover. This is why the processing is handled as if they are point clouds. If the processing grid is done as a 3D point grid - you preserve this type of structure. What most software do is project 3D dem on to a 2D space - only one point that projects to the 2D point is kept track of in standard processing workflows.