说明：  读取renix格式的卫星星历文件，支持原始网络下载文件，阿紫泰克软件转换的星历文件，将数据存在数组中待计算
(Read format renix satellite ephemeris files, support for the original network to download documents, Tektronix阿紫conversion software ephemeris file to the data array to be calculated)