In the simplest of RF target simulators, target motion is created and presented to the DUT by electromechanically moving one or more emitters, representing targets, along a spherical surface with the DUT at the focal point of the sphere. The DUT may be mounted on a mechanical positioner to coordinate motion at the DUT sensor with each RF scene.
Advantages:
- Fast, accurate physical motion of multiple targets
- Generate scenes with a wide field of view
- Electric motors suitable for many applications
- At it’s limit, may require hydraulics for highest rates of acceleration
- Overlapping multiple targets cannot be emulated, keep-out zones may be necessary to avoid occlusion or collision
- The moving emitter approach is suitable for multi-target motion at lower dynamic rates
