AutoCAD supports many 3D modeling / CAD formats, including the 3D ACIS (.sat) files, which means it's ideal software for sat to dwg conversion. However, not everyone has access to this program in which case you have to use one of the alternatives that allow import of .sat files and offer export to DWG format.
Open SAT file Open DWG fileA set of 3D modeling tools
A 3D CAD translation software