Coordinated mini-radar target simulators for improved accuracy and improved ghost cancellation

A system for testing vehicular radar, comprising:

• a re-illumination element adapted to receive electromagnetic waves, the re-illumination element being adapted to transmit response signals, the re-illumination element comprising:
• a plurality of miniature radar target simulators (MRTS's), each comprising:
• a receive antenna;
• a variable gain amplifier (VGA);
• an in-phase-quadrature (IQ) mixer;
• a variable attenuator;
• and a transmit antenna, the MRTS's being disposed in an array comprising rows and columns of the MRTS's, the VGA and the variable attenuator being configured to control an emulated radar cross section (RCS) of a target, wherein the array comprises a plurality of MRTS's staggered in displacement from a device under test (DUT).

A system for testing vehicular radar, comprising:

• a re-illumination element adapted to receive electromagnetic waves, the re-illumination element being adapted to transmit response signals, the re-illumination element comprising:
• a plurality of miniature radar target simulators (MRTS's), each comprising:
• a receive antenna;
• a variable gain amplifier (VGA);
• an in-phase-quadrature (IQ) mixer;
• a variable attenuator;
• and a transmit antenna, the MRTS's being disposed in an array comprising rows and columns of the MRTS's, wherein:
• the each MRTS of the array is laterally spaced a distance px and vertically spaced a distance py from an adjacent MRTS;
• and an incremental subtended azimuth angle (δϕ) and an incremental subtended elevation (δθ) angle are finer than an azimuth resolution specification (ϕres) and an elevation resolution specification (θres) of a radar device under test (DUT);
• and
• a controller comprising a memory that stores instructions, and a processor that executes the instructions, wherein the controller controls the re-illumination element and is configured to perform performance testing on the vehicular radar that includes a plurality of targets.