How does GPS work?
Have a look at this web site for a thorough explanation. You will have to put on your thinking cap... mine blew off half way down :) HOW GPS WORKS
Forum Discussion
valhalla360 wrote:
Excellent description if you are looking for the minutia and how they addressed many of the implementation issues.
If you are trying to explain it to grandpa...the system measures the distance from your GPS receiver to multiple satellites of known position. If you are polling enough satellites and you know how far away they are, there is only one position you can be in.
system needs at least 3 sat's for position, (latitude and longtitude) 4 sat's for position and elevation.
