二维射线追踪程序包，主要用于石油行业基于射线追踪的正演模拟计算-2D Raytracing source packet, main use for oil exploration 2d raytracing modeling

langan法射线追踪，可用于层析成像，f编的-Langan Raytracing 2D

电离层三维数字射线追踪，可根据电离层参数获取群路径与地面距离的关系-Ionosphere 3D dimensional numerical ray tracing,the group can obtain the relationship between the path and the ground distance of ionospheric parameters