大圆航线可执行航向的自动化建模计算

Construct of Realizable Computational Model of Great Circle

分析了大圆航线在大洋航行中的明显优势,研究了大圆航线原理和实际执行方法,从计算机编程的角度改进了大圆航向计算方法,提出了新的分点坐标计算方法,构建了完整的大圆航线计算模型,模型输出符合航海作业习惯,便于在大洋航行中应用,对提高航海保证效率具有积极意义。

Great circle route is the shortest route between two points on the earth.It is popularly used in transoceanic naviga⁃tion,and its advantage is more distinct in polar navigation.The paper analyzes the principle of great circle route and means in practi⁃cal executing,improves the method of calculating the great circle course,from the perspective of computer programming,puts for⁃ward a new way to calculate the coordinates of break points,and constructs an integrated calculation model of great circle route.It is proved that the consequence is in accordance with navigation practice,it is convenient to proceed in transoceanic navigation.Thus it has remarkable effect on improving efficiency of navigation service work.