radar plotting

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.

随着雷达技术的发展，ARPA（Automatic Radar Plotting Aids自动雷达标绘仪）由于可以直接显示目标船的航向、航速，同时可以直接得到目标船的DCPA和TCPA，因而得到了广泛的应用。

However, those research was based on single target ship and there was little research on multi-ship radar plotting assessment system.

但目前的研究大部分是基于单物标船的研究，对于多物标雷达标绘评估系统的研究还很少涉及。