In radar technology, what does 'target tracking' refer to?

Target tracking in radar technology specifically refers to the ability to monitor the speed of a selected vehicle over time. This process involves continuously observing the vehicle's movement and speed, enabling law enforcement and monitoring systems to gather data regarding how fast the vehicle is traveling. This capability is crucial, particularly in applications like speed enforcement and traffic analysis, where understanding not just the speed at a single moment, but the changes in speed over time can provide insights into driving behavior, potential violations, and the overall flow of traffic.

The other options do not accurately reflect the concept of target tracking. Identifying the fastest vehicle in a group is related to a snapshot measurement rather than continuous monitoring. Measuring the distance between vehicles doesn't consider speed, and determining a vehicle's license plate is a function of identification rather than speed tracking. Thus, the accuracy of option B lies in its definition of the ongoing process involved in monitoring a specific vehicle's behavior over time.