In other cases, a spherical model is used, and the primary distance calculation used is the great-circle distance (see Resources).
在其他情况下使用球面模型，所使用的主要距离计算为大圆弧长(参见参考资料)。
For the purposes of this article, I will demonstrate distances using the flat-Earth model and the great-circle distance and leave the rest to you to explore.
但是为了实现本文的目的，我将使用平面地球模型和大圆弧长距离来演示距离，其他方法留给读者探索。
The great-circle distance calculates the shortest distance between any two points on the surface of a sphere.
大圆弧长计算球面两点之间的最短距离。
A simulation calculation was made by the Simpson numerical integral, and the simulated results of the initial course and route distance were compared with those based on the great circle route.
用辛普森自适应算法进行了仿真计算，并与大圆航线的计算结果进行了比较。
A simulation calculation was made by the Simpson numerical integral, and the simulated results of the initial course and route distance were compared with those based on the great circle route.
用辛普森自适应算法进行了仿真计算，并与大圆航线的计算结果进行了比较。
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