船舶靠泊操纵模拟过程中的计算方法研究

Study on calculation means of vessel berthing simulationZHANG Zhe

在船舶靠泊操纵仿真中,由于船舶不能视为质点运动,因此船岸距离的计算不能简单地归结为点线距离,而应该用多边形间距方法进行计算。本文对这一问题进行了专门研究,找到一种将计算与判别合二为一的数值计算方法。该方法能避免坐标的组合判别,减少出错可能,而且简单易用。经仿真实践使用,能正确有效地完成多边形间距离的计算,具有一定的实用价值。

Abstract： Vessel can not be regarded as particle while vessel is berthing, so distance of vessel and shoreline is not distance of point and line ,it should be calculated as space between polygon and line. The paper tries to specifically research into this topic, and manages to find a means of numerical calculation that can merge calculation and distinguish. The means can avoid compound decision and avoid mistakes, at the same time, it is simple and practical. The practice of using simulation proved this means can completely calculate distance between polygon and line accurately.