Comment by rangibaby
9 years ago
GPS has a "speed limit" for that reason:
> In GPS technology, the term "COCOM Limits" also refers to a limit placed on GPS tracking devices that disables tracking when the device calculates that it is moving faster than 1,000 knots (1,900 km/h; 1,200 mph) at an altitude higher than 18,000 m (59,000 ft).[2] This was intended to prevent the use of GPS in intercontinental ballistic missile-like applications.
/EDIT SEE BELOW
commercially available GPS receivers do normally implement the limits. This is why i said "commercial GPS signal" as the signal itself doesn't have any such limit, and anyone can make their own receiver without such speed/altitude limits and with higher accuracy than typical commercial receiver.
I had that thought in the back of my mind. Thanks for clarifying