Device for efficiency test of synthetic aperture radar

PURPOSE: A device for efficiency test of an airborne synthetic aperture radar (SAR) is provided to perform efficiency test of an SAR on the ground in real time by controlling a 3-axis motion platform and a virtual target device. CONSTITUTION: A 3-axis motion platform (110) is combined with an antenna (140) and driven in the directions of roll, pitch, and yaw. A simulation target device (120) includes a target altering device/ A system testing device (130) interlocks the 3-axis motion platform with the target altering device in real time and controls the 3-axis motion platform and the target altering device. The target altering device adjusts the amplitude of an output signal based on information of a virtual target received from the system testing device, performs delays of range and phase, and simulates Doppler components. [Reference numerals] (110) 3-axis motion platform; (120) Simulation target device; (130) System testing device; (140) SAR antenna; (150) SAR load body; (AA) Downward converter; (BB) Target modulation device; (CC) Interlock EGI and output encoder; (DD) Upward converter; (EE) Roll, pitch and yew controller; (FF) Tower; (GG) Set system variable; (HH) Simulate test environment; (II) Interface; (JJ) Result analysis device