a system for testing radar in accordance with one embodiment comprising a target motion platform ; a target motion platform controller for controlling motion of the platform ; a radar responsive tag and a delay line located on the target motion platform ; the radar which is being tested ; and a motion measurement simulator for inputting data to the radar electronics assembly to simulate movement of the radar . in some embodiments the system further comprises a radar motion platform , wherein the radar electronics assembly is positioned on the radar motion platform ; a radar motion platform controller for controlling the movement of the radar motion platform ; and a master controller coupled to the radar motion platform controller and the target motion platform controller .