Vector Lag describes what phenomenon?

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Multiple Choice

Vector Lag describes what phenomenon?

Vector Lag is the delay between when a target changes its motion and when the ARPA display updates the target’s velocity vector to reflect that new motion. This happens because the system bases course and speed on past measurements and uses prediction to extrapolate the path. When a maneuver occurs, the old vector remains for a while while new data are processed and the track is updated, so the displayed vector gradually shifts to the new course and speed. The phenomenon isn’t about processing delay, range loss, or clutter; it’s the natural lag in updating the velocity vector after a maneuver, which is why the target may be seen to “steady” on the new path only after the vector has caught up.

Vector Lag is the delay between when a target changes its motion and when the ARPA display updates the target’s velocity vector to reflect that new motion. This happens because the system bases course and speed on past measurements and uses prediction to extrapolate the path. When a maneuver occurs, the old vector remains for a while while new data are processed and the track is updated, so the displayed vector gradually shifts to the new course and speed. The phenomenon isn’t about processing delay, range loss, or clutter; it’s the natural lag in updating the velocity vector after a maneuver, which is why the target may be seen to “steady” on the new path only after the vector has caught up.

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