Can .DTM (Digital Terrain Model) Data and Satellite Imagery be overlayed in Unreal Engine? For the eventual purpose of creating a VR real landscape to move through?
If you have a height map of a landscape then you can use that with the landscape system, and then you could plug in satellite images into the material for the landscape. Alternately, you can create your landscape in your 3D software and just export that to UE4.