GPS navigator on a space station

[Aghanim]

11 hours ago, Kryten said:

With modern software-defined radio tech it's possible to build your own GPS unit without the restrictions. It's certainly not easy, but it has been done.

It is possible to get GPS location fix using common inexpensive digital TV stick: http://www.rtl-sdr.com/receiving-gps-with-an-rtl-sdr-dongle-and-gps-antenna/

This is the same thing in a rocket: http://sdrgps.blogspot.co.id/2016/04/paul-breed-rocket-flight-test-data.html

[kerbiloid]

ICBM post-boost vehicles use GPS to increase accuracy from 500 to 90 m. And they fly at nearly the same speed as orbital crafts.