NORAD公布的两行星历数据计算轨道参数模型，本程序包括SGP SGP4 模型，是用C++写的！前面上传了matlab版本，请读者搜索一下就可以找到,NORAD released two calendar data planet orbit-parameter model, the process includes the SGP SGP4 model is C++ Written! From in front of a matlab version, readers can be found