Which two conditions are required for +/- steady-state tracking on ARPA?

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Multiple Choice

Which two conditions are required for +/- steady-state tracking on ARPA?

Steady-state tracking on ARPA relies on a constant-velocity model. When both your own ship and the target keep the same course and speed, their relative motion is a straight line with a constant relative velocity. That lets the ARPA tracker predict future positions accurately and settle into a stable, steady track without continual corrections. If either vessel changes course or speed, the relative velocity changes, so the predicted position drifts from reality and the track can lose its steady state, requiring reinitialization or frequent updates. Wind and sea state don’t by themselves guarantee a steady-state track; they may influence motion, but the key requirement is that both vessels maintain fixed course and speed.

Steady-state tracking on ARPA relies on a constant-velocity model. When both your own ship and the target keep the same course and speed, their relative motion is a straight line with a constant relative velocity. That lets the ARPA tracker predict future positions accurately and settle into a stable, steady track without continual corrections.

If either vessel changes course or speed, the relative velocity changes, so the predicted position drifts from reality and the track can lose its steady state, requiring reinitialization or frequent updates. Wind and sea state don’t by themselves guarantee a steady-state track; they may influence motion, but the key requirement is that both vessels maintain fixed course and speed.

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