由david vallado更新的轨道确定的程序代码，本程序融合sgp4和sdp4，包含193个文档-this procedure is the sgp4 prediction model from space command. this is an updated and combined version of sgp4 and sdp4

这是一本关于数值计算方法的书，编程工具可选用matlab和mathematica-This is a book on numerical methods, programming tools can be used matlab and mathematica