GPSposition
代码说明：
本程序包主要有5个函数，分别实现了大地坐标与WGS84坐标的转换，卫星位置计算，电离层延迟模型，对流层延迟模型(Delay_of_ionosphere(）Delay_of_troposphere( ） GetSVPos() BLH_to_WGS84( B,L,H ) WGS84_to_BLH(X,Y,Z))
文件列表：
BLH_to_WGS84.m,321,2015-07-20
Delay_of_ionosphere.m,2052,2015-07-27
Delay_of_troposphere.m,2163,2015-07-27
GetSVPos.m,4496,2015-09-04
WGS84_to_BLH.m,852,2015-07-21
测试数据
........\auto0750.14n,234476,2014-11-06
........\auto1090.13n,265749,2015-08-30
........\GP011090.13n,265414,2015-09-04
........\GP011090.13o,446463,2015-07-30
........\GP01SPP.out,68517,2015-09-05
........\GP021090.13n,265413,2015-09-04
........\GP021090.13o,464352,2015-07-30
........\GP031090.13n,265414,2015-09-04
........\GP031090.13o,410777,2015-07-30
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