With the development of Radar technic, ARPA (Automatic Radar Plotting Aids) can display directly the course and speed of target ship and get the DCPA and the TCPA of the ship, so it is applied widely.
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- 隨著(zhù)雷達技術(shù)的發(fā)展，ARPA(Automatic Radar Plotting Aids自動(dòng)雷達標繪儀)由于可以直接顯示目標船的航向、航速，同時(shí)可以直接得到目標船的DCPA和TCPA，因而得到了廣泛的應用。
