azernik
Joined 16 years ago
Joined 16 years ago
Received GNSS power is on the order of -130dBm (10e-16 W) - you can jam that with a 1W terrestrial source for hundreds of meters around. Way more if you're willing to scale the power from car USB power levels to bigger grid-connected supplies.
LORAN, from my quick googling, looks to be about 6-7 orders of magnitude higher received power.
US bonds happen to be the assumed-safe sink where central banks store their dollars for this eventuality.
Policy is the internal, non-binding decision they make about how they exercise those powers, which GP comment accurately described.
Because the clocks internal to GNSS receivers are not that accurate, if they're not at the "targeted" location they'll see that all satellites are off by a given time offset, and think that their clock is just off by that much.
The United States is a command economy, where the only command is "no".