the only thing I can think of is to use digital elevation models of higher spatial resolution and quality.
Regarding your second question, you need Beta0 as an input for Terrain Flattening - please have a look here:
the only thing I can think of is to use digital elevation models of higher spatial resolution and quality.
Regarding your second question, you need Beta0 as an input for Terrain Flattening - please have a look here: