mfdes said:Metamorphic said:Ummm....its satellite GPS Pablo, if we can access on our machine, so can they from theirs with tracking on machine serial numbers.
know what i mean? Just like a smart phone with the AFP
They dont need usb access, thats only there to load data onto your PC from your GPS communications.
I dont expect you will understand though
Hey Metamorphic,
My understanding of GPS receivers is that they listen to the time and position of satellites on the GPS network, and use calculations to triangulate your position. I don't think they actually transmit anything to the satellite, as the juice needed to transmit would chew through the batteries in no time at all.
Thus the GPS network theoretically does not know where GPS receivers are located. This, of course, is the official explanation. Take it with a grain of salt, the possibility remains that a method for locating individual receivers exists, as this would be extremely useful to the US armed forces in time of war, and they designed and launched the system in the first place.
In summary, I disagree, but only somewhat.
Correct, they are a static receiver. Also if they transmitted a signal to the satellites at all, they would use a LOT more power than they currently consume. If you were to place a wide band receiver (or other detecting device) right beside a GPS, they may be able to detect some slight EMI, but that would be due to their internal oscillators, etc, used to convert the received signals. e.g. Use a cathode ray oscilloscope (CRO) with a loop of wire as an aerial.
I can try that if you would like.
Rob.
