根据经纬度计算大地坐标，不同坐标系下表示方法的转换，高斯正反算-According to the coordinates calculation geodetic coordinate, coordinate different conversion of the representation method, gaussian positive and negative to calculate

通过地面站的三维坐标和卫星经纬度位置坐标从而计算卫星高度角和方位角- to calculate the satellite elevation and azimuth angles by the three-dimensional coordinates of the ground station and satellite latitude and longitude position coordinates