If its receiving, it can be tracked, triangulated exactly.
There is no other way, unless they use a repeater...and even that has its flaws.
Anything that makes ‘electronic noise’ can be found using triangulation.
Google Clinton's Pager Hacked (I think it was circa 1996-1998).
That would be an extremely weak passive signal, if it gives one off at all, which I seriously doubt. Quite a few of our smart munitions utilize the L1 and sometimes the L2 bandwidth for GPS aquisition to trim their inertial instruments. Using your logic, the would be very suceptible to be homed in on by defensive measures and that is simply not a concern. The only thing our GPS systems have to worry about is being jammed by blankets of energy beamed in the general vacinity at the bandwidth of the GPS band the munition is using....and there are counter measures for that.
I find it very unlikely a passive GPS system can be tracked. Sorry.
“If its receiving, it can be tracked, triangulated exactly.
There is no other way, unless they use a repeater...and even that has its flaws.
Anything that makes ‘electronic noise’ can be found using triangulation.”
Actually it is called trilateration. The receiver only receives. It does not transmit anything. When your on-star system tells someone where you are it does it with the cellular functionality that forms part of the on-star system.
Yes, Obama’s phone gives off RF energy. Big deal...only trackable from a few feet away. Yes, any GPS receiver Obama has can locate his position. Unless he has a GPS transmitter no one else can gain that information, unless his cellular function sends out that data. That can be controlled via firm ware programming. Not a big deal.