基于OpenGL的卫星覆盖可视化仿真,通过轨道分析了三维和二维显示，星下点-OpenGL-based visual simulation of the satellite coverage through the three-dimensional and two-dimensional orbital analysis shows that the nadir

通过此程序可以仿真出围绕地球运动的卫星，同时可以看到其运动的轨道-This program can simulate the satellite revolves around the earth at the same time you can see its movement track