alt Hacker NewsProbably more complicated to setup in a hostile environment because you'd need multiple transmitters, which also need to remain stationary, or at least you need to accurately know when they move.
Probably more complicated to setup in a hostile environment because you'd need multiple transmitters, which also need to remain stationary, or at least you need to accurately know when they move.
Knowing where the transmitters are is vital. So wonder if you build in a positioning system to them. Each transmitter transmits a signal, but also rebroadcasts the signals it receives from the other transmitters on separate bands (these can be at lower power). If you can pick up a few transmitters, is that enough to build a model of where they are relative to each other, and then where they are relative to you?
If each transmitter picks up the rebroadcasts if its own signals, then with some assumptions about the rebroadcast lag (or measurements of it added to the signal!), that's enough to know the range to each other transmitter, right? So maybe they do that and then just broadcast the ranges (tagged on to their main signal), then any remote receiver can work it all out from there.