Quote:
Originally Posted by LogicalApex
GPS also needs a minimum number of satellites to accurately get your location. As the satellites don’t really say where you are they say where they are. Your GPS device, in this case the G30, then triangulates your location based on the location beacon of multiple satellites. Going “if Sat. A is there, Sat. B is there and Sat. C is there with signal times to me of X I must be at this spot as that’s the only mathematically likely place”. The more satellites you are locked to the more accurate your “fix” and can be down to a foot or so.
So if you’re getting a lower number of locks that will lead to inaccuracies. If you can’t improve your locks outside then you likely have an issue with your antenna.
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Yep -- To solve for your location, your receiver requires a minimum of four satellite signals. The four signals are used to measure the time delay from when the signal was transmitted to when your receiver received it. Then, knowing the rate (speed of light), you can solve for the distance. This is called trilateration.