Regarding the question: how does #teamflat explain GPS satellites?

https://en.wikipedia.org/wiki/Skywave

"In radio communication, skywave or skip refers to the propagation of radio waves reflected or refracted back toward Earth from the ionosphere, an electrically charged layer of the upper atmosphere. Since it is not limited by the curvature of the Earth, skywave propagation can be used to communicate beyond the horizon, at intercontinental distances."

So, you beam a radio signal towards the ionosphere/dome from a ground station dish. The signal reaches the ionosphere/dome and it bounces back down to Earth from the sky. This would make it seem like the signal originated from a satellite, but in fact it originated on the ground.

And anyway you don't need satellites to determine "GPS" location. You just need to be within range of cell towers and triangulation math will do the rest. This would work basically the same on a flat Earth or a globe Earth.

#teamglobe should probably reconsider using GPS as evidence of a globe earth. Feel free to correct me.