GPS3d 是一组可以从PC机处理GPS的工具，一个良好的功能是可以通过OpenGL，3D纹理映射模型查看GPS数据-GPS3D is a group of tools that can be used for processing GPS data on PC. One splendid function of the tool is that it can examine GPS data through texture mapped 3D model by use of OpenGL.

这是我编的卫星星座的显示程序，可以看到天上24颗卫星的运行三维图，用OPENGL联合开发的。

地球坐标系ecef坐标与地理坐标系(bj54/wgs84)转换。-Ecef coordinate system and geographic coordinates (bj54/wgs84) conversion.

This program can generate 3D surface and terrain from a video source by the image processing technique as well as from a random or fractal source. It is a good base for Remote Sensing, Remote Topography, Radars, GPS and regenerating Earth Terrains fr