Which factor most directly influences how often a tracked contact's position is updated?

• A. Operator input.
• B. Radar scan rate.
• C. Time of day.
• D. Weather conditions.

Answer: (B)

The refresh cadence for a tracked contact comes directly from how quickly the radar completes its observation cycle. The radar scan rate is the key factor because each sweep of the beam produces new position data (range and bearing) for the target. When the scan rate is higher, the system can refresh the contact’s position more often; when it’s lower, updates come less frequently. Operator input can influence how data is displayed or when manual updates are issued, but it doesn’t set the automatic update cadence. Time of day and weather affect detection quality or display clutter, not the inherent rate at which position data is produced.