Tuesday, Jan 22, 2008 at 16:09
Greg
I really thought you had more intelligence than that , A GPS can do a distance A to B straight line ie
Brisbane to
Melbourne 1373K, reset the the unit for routeing A to B 1679K , therefore the unit must take into account hills, hollows, and corners,
A GPS gets your location by Time, Lat' Long' And Alt' and your trying to tell me a GPS don't use Altitude as
well in calculating your location so as to route to a distant point , Now we all know the distances between towns has been established years ago by surveyance, ie over the great divide
Grenfell to Penrith for one, say the distance by road is 300K , and thats the distance surveyed over hills and gullies, it's the same distance on paper maps, I coulld park at the
Grenfell PO and program the GPS to work out a route to Penrith PO , The GPS will show me 300K,Now if the GPS don't take into account hills etc then something would be wrong with the calculations,
Don't bother me again with your heard tell stories and Mythes and BS written in a book by some prick who does his studies in an office ,I do my tests out in the real world with my 2 correctly set Garmin GPS units which give the same answers,
Doug
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GPS receiver must be locked on to the signal of at least three satellites to calculate a 2D position (latitude and longitude) and track movement. With four or more satellites in view, the receiver can determine the user's 3D position (latitude, longitude and altitude). Once the user's position has been determined, the GPS unit can calculate other information, such as speed, bearing, track, trip distance, distance to destination, sunrise and sunset time and more.
Cruise Missiles use GPS guidance If they didn't take into account of terrain ......MISSED
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