Antenna tracker with a different radio link.

In my job I would like to make an antenna tracker. It is a manned vehicle so no need for the autopilot function on board and the radio I use is a licenced frequency radio that has an Ethernet interface. I am thinking about a solution that I transmit the GPS data from the vehicle through my radio to the AAT. Than in the ground I build up the devices that normally planned to place to the vehicle. So I connect my remote GPS to a flight controller. Now I have to use the original radios ( I think 900 MHz radios) to connect my hacked remote device to the normal ground AAT boxes. Of course I would like to remove these 900 MHz radios from the system but I do not know what coding or other function are these radios do.

What do you think about in general and what could be the simplest way to build up this system?

George