Surely the receiver would run plausibility checks on the received messages and reject spoofed locations that are physically impossible to receive by said receiver?
But even if that was the case, is there any value for a receiver to be receiving those? Surely those messages would be picked up by a receiver closer to the transmitter anyway. I think the value in spoofing rejection is greater than the probability of a transmission reflecting from beyond the horizon and not being already being picked up by a local receiver.
> But even if that was the case, is there any value for a receiver to be receiving those?
Yes, radio propagation is an entire academic field to be studied :)
In addition, if you have enough receivers you can use that to run something called MLAT [1] to also pick up GA aircraft that just have a transponder but no GPS. The more the merrier.
