| 一种高纬度区域船舶偏航距离的高精度求解算法 |
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| 引用本文： | 梅斌,孙立成,史国友,马麟,李伟峰.一种高纬度区域船舶偏航距离的高精度求解算法[J].上海海事大学学报,2018,39(4):75-81. |
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| 作者姓名： | 梅斌 孙立成 史国友 马麟 李伟峰 |
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| 作者单位： | a. 航海学院； b. 辽宁省航海安全保障重点实验室,中国船级社,大连海事大学 a. 航海学院； b. 辽宁省航海安全保障重点实验室,大连海事大学 a. 航海学院； b. 辽宁省航海安全保障重点实验室,大连海事大学 a. 航海学院； b. 辽宁省航海安全保障重点实验室 |
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| 基金项目： | 国家自然科学基金(51579025)；辽宁省自然科学基金(20170540090) |
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| 摘 要： | 为提高船舶偏航距离的求解精度,设计一种迭代求解的方法,并与基于墨卡托投影的欧氏距离算法(算法1)和基于墨卡托投影的直接求解算法(算法2)进行比较,发现上述两种算法都存在误差。为此,提出一种基于正轴等距方位投影的直接求解算法(算法3)。验证结果表明:船舶在高纬度区域航行时,算法3比算法1和2对偏航距离的求解精度更高、速度更快。算法可应用于船舶运动控制、进出港操纵、航道规划和航线设计。
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| 关 键 词： | 偏航距离 大地线 下山单纯形法 正轴等距方位投影 |
| 收稿时间： | 2017/10/20 0:00:00 |
| 修稿时间： | 2018/1/24 0:00:00 |
A high accuracy algorithm for cross track distance of ships at high latitudes |
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| Institution: | Dalian Maritime University Navigation College |
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| Abstract: | In order to improve the solution accuracy of the cross track distance of ships, an iterative method is designed and compared with the Euclidean distance algorithm based on Mercator projection (algorithm 1) and the non iterative solution algorithm based on Mercator projection (algorithm 2). It is found that there are errors in both algorithms. Therefore, a non iterative algorithm based on the azimuthal polar equidistant projection (algorithm 3) is proposed. Results shows that when ships are sailing at high latitudes, the cross track distance solution accuracy of algorithm 3 is higher and the solving speed of algorithm 3 is faster than those of algorithms 1 and 2. Algorithm 3 can be applied to ship motion control, ship entering and leaving port maneuvering, waterway planning and route design. |
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| Keywords: | cross track distance geodesic Nelder Mead simplex algorithm azimuthal polar equidistant projection |
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