What is the role of the prediction horizon in ARPA?

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Multiple Choice

What is the role of the prediction horizon in ARPA?

Prediction horizon is the time window ARPA uses to forecast where each detected vessel will be in the future. Within this span, ARPA extrapolates positions based on the current course and speed (and sometimes simple maneuver models) to plot predicted tracks and assess potential risks like Closest Point of Approach. This foreseen window determines how far ahead you can anticipate a potential collision and plan avoidance accordingly. A longer horizon gives earlier warnings but can be less accurate if targets maneuver; a shorter horizon tends to be more precise but offers less lead time. The other aspects—how many targets are tracked, the radar’s scan rate, or marker color—are separate features and do not define the horizon.

Prediction horizon is the time window ARPA uses to forecast where each detected vessel will be in the future. Within this span, ARPA extrapolates positions based on the current course and speed (and sometimes simple maneuver models) to plot predicted tracks and assess potential risks like Closest Point of Approach. This foreseen window determines how far ahead you can anticipate a potential collision and plan avoidance accordingly. A longer horizon gives earlier warnings but can be less accurate if targets maneuver; a shorter horizon tends to be more precise but offers less lead time. The other aspects—how many targets are tracked, the radar’s scan rate, or marker color—are separate features and do not define the horizon.

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