What is the process of Scanning on a RADAR unit?

The process of scanning on a RADAR unit primarily involves the method by which the equipment is used to monitor moving vehicles. Scanning is defined as the action of assessing or observing various targets over a defined area. In this context, the correct answer relates to how the RADAR can focus on multiple points by scanning across a stationary object to accurately gather readings from the environment.

By scanning across a stationary object, the RADAR is able to obtain baseline measurements. This practice helps the operator distinguish between the speed of moving vehicles and any potential interference or anomalies from stationary items. This strategy is crucial for accurate speed detection, as it allows the operator to effectively identify when a vehicle is approaching, passing, or moving away from the measurement point.

The other options, while relevant to the operation of RADAR, do not accurately convey the specific mechanics of scanning as it relates to measuring speeds. Rotating the antenna continuously is more about the mechanics of the device rather than the scanning process itself. Focusing only on moving traffic may overlook important context needed for accurate detections. Testing the RADAR in various conditions pertains to calibration and reliability rather than the scanning protocol.