GPS SDR receiver / transmitter


I recently purchased an ADALM-PLUTO module, I'm using it on a Ubuntu virtual machine with the PlutoSDR connected via USB.

I would like to make a GPS receiver. For this, it seems to me that the following software should be suitable:

At the same time, I also want to "emulate" a GPS position with the following software:

So my final idea would be to send a GPS position with the transmitter that would be received by the receiver, all thanks to the ADALM-PLUTO module.

I tried with both softwares, but it was impossible to receive any GPS position....

Have you ever made this kind of system before? Is the idea feasible? Do I have to use in antennas adapted to the right frequencies for this?

Thank you and best regards,