I want to find and see "GPS satellites in view" for different orbits missions. For example I want to see the observable GPS satellites for a specific satellite in GEO, for this purpose I need a software which can visualize and make a 3D model of about 33 satellites together(32 GPS satellites and one in GEO) arounding the earth for me. Do you know any special software? I use windows 8.(I couldn't use SaVi because of operating system)
Maybe Systems Tool Kit could be helpful:
It's a powerful tool, and there is also the possibility to have a free license, although it does not include all capabilities. I have used it on Windows 10, but I cannot tell about Windows 8.