Great graphics if you just want to see how satellites orbit the Earth and watch things from "up there", but it misses a few basic functions for ground pass predictions.
The program offers four different views: 3D-Orthogonal View (the Earth is displayed as a sphere and the satellites orbit it); 2D-Equidistance Mercator View (the complete Earth's surface is displayed and the satellites are shown as icons); WDB-Equidistance Mercator View (it is possible to zoom into it and display just parts of the world's surface with geopolitical details); and Observer's view (useful if you want to know where you have to look to see a satellite). Each of this views offers a bunch of moving around features.
Notice that you can use this program not only for the GPS-satellites but for all other satellites as well, since it uses the standard NORAD two line elements files.
We found it rather prone to crashing.
New in version 2.4 is the Weather dialog and the Internet dialog. Check them out. I did also some major internal restructuring on the graphics engine so that you can now use JPEG, GIF, EMF, WMF, TIFF, PCX, and BMP as Textures.
The program needs Windows NT/95, the OpenGL DLL's and a color depth of at least 16 bit (65535 colors).
Download options are very flexible. We have chosen the one which includes the more features (meaning also the larger in size). Additionaly, you may also need to get a few OpenGL drivers (we did not) - if so, see the help files to know details about the source.
