What device is commonly used to calibrate both RADAR and LIDAR systems?

The device commonly used to calibrate both RADAR and LIDAR systems is a calibrated target. This is because calibrated targets provide a known reference against which the measurements from RADAR and LIDAR systems can be compared and adjusted. When a RADAR or LIDAR system is aimed at a calibrated target, the system can determine its accuracy by analyzing the reflected signals and ensuring they match the expected values based on the known distance or size of the target. This process helps in maintaining the reliability and precision of the measurements taken by these systems.

In contrast, other devices like a speedometer or radar gun typically measure speed or specific velocity and may not serve as effective calibration tools for both types of detection systems. Distance measuring equipment may assist in measuring distances but does not inherently provide the calibrated feedback necessary for adjustment and verification that a calibrated target does.