gps数据处理软件--GAMIT，很棒的软件-gps data processing software- GAMIT, great software

一个相当好用的matlab函数，由美国国家可再生能源实验室科研人员设计，可以计算太阳的直射维度和方位角。只要输入时间、观测地点即可。 -This algorithm is based on numerical approximation of the exact equations. The authors of the original paper state that this algorithm should be