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Old 07-30-2011
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Zanshin Zanshin is offline
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I just checked Garmin's website and they state that
Quote:
GPS normally uses great circle calculations for distance and desired track.
On an east-west crossing 90 degrees of longitude (1/4 of the earth's circumference) at around 20 degrees N, the difference between rhumb line and great circle is 124Km on a distance of 8166km. The difference at the equator is 0 but at higher latitudes it makes more of a difference.
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