Extended navigation parameters (ENP) and great circle flight path (GCFP) calculated algorithms are presented in detail and the algorithm flow chart is presented.

详细推导并提出了扩展导航参数及大圆航线航迹解算算法，还给出了算法流程图。

youdao

One is straight line or curve on the local plane. The other is the great circle flight path on the earth surface.

预定的飞行轨迹可以有两种规划方式，一是近似在当地切平面上的直线或曲线；

youdao

The archipelago is a hazardous traffic median in the great circle route, the shortest path between ports on either side of the North Pacific.

ECONOMIST: Shipwrecks in the Aleutians