Has anyone ever heard of cars that deliberately interfere with GPS signals?
So, my friend has a Toyota Wish (2003 or 2005 make). Whenever we go geocaching with it, my Garmin Oregon 300 is rendered quite useless while the car is running. What happens is, the GPS accuracy shown in the device stays the same, it still shows 5m/6m/7m, the usual but the GPS arrow just drifts away somewhere. In reality, the accuracy is now about +/-100 up until 300 meters. It just goes somewhere in a random direction.
When I get out of the car, if I want to get the location right, I have to restart my unit. If I do not restart it, it sorts itself out eventually but that takes some time, maybe 5 minutes or so. I can go back to the car, sit in it and everything is fine but as soon as we start driving, the GPS arrow drifts away again.
So, the car has a built-in navigation, my guess is that maybe manufacturers have installed some sort of jammer that would interfere with GPS signals of the receivers in the car, and only their device has the decoder that gets the signal right after the jamming. That way you would be bound to use GPS from them and fix it by them, them making money out of it. But that sounds like really douchebag thing to do to your clients...
Anyone ever experienced something like this?
So, my friend has a Toyota Wish (2003 or 2005 make). Whenever we go geocaching with it, my Garmin Oregon 300 is rendered quite useless while the car is running. What happens is, the GPS accuracy shown in the device stays the same, it still shows 5m/6m/7m, the usual but the GPS arrow just drifts away somewhere. In reality, the accuracy is now about +/-100 up until 300 meters. It just goes somewhere in a random direction.
When I get out of the car, if I want to get the location right, I have to restart my unit. If I do not restart it, it sorts itself out eventually but that takes some time, maybe 5 minutes or so. I can go back to the car, sit in it and everything is fine but as soon as we start driving, the GPS arrow drifts away again.
So, the car has a built-in navigation, my guess is that maybe manufacturers have installed some sort of jammer that would interfere with GPS signals of the receivers in the car, and only their device has the decoder that gets the signal right after the jamming. That way you would be bound to use GPS from them and fix it by them, them making money out of it. But that sounds like really douchebag thing to do to your clients...
Anyone ever experienced something like this?