What defines the speed calculated by the formula Target Speed = Closing Speed - Patrol Speed?

The correct answer focuses on the application of the formula, which is specifically designed for moving radar systems. In a moving radar scenario, the radar unit is in motion while measuring the speed of a target vehicle. The formula Target Speed = Closing Speed - Patrol Speed highlights this process, as it indicates how the target's speed is ascertained based on the relative speeds of both the moving patrol and the approaching vehicle.

In moving radar, the patrol speed is the speed at which the police vehicle is traveling, and the closing speed is the rate at which the distance between the patrol vehicle and the passing target (another vehicle) decreases. By using the formula, law enforcement can accurately deduce the speed of the target, considering both the speed at which they are closing in on it and their own speed.

The other options do not accurately represent the context in which this formula applies. For instance, while stationary radar focuses on capturing the speed of a vehicle relative to a stationary point, the formula in question is explicitly structured for scenarios where the radar itself is in motion, thus validating the selection of moving radar as the correct answer.