On Wed, 27 Oct 2004 23:08:51 GMT, Bruce in Alaska
wrote:

That would very much depend on the GPS, its Position Update Rate, and
internal Math Capabilities. I would suspect that any GPS that updates
faster than every .5 Sec, and has a good floating point processor, would
give good resolution down to at least 2 to 3 knots.
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That is definitely true. With my little hand hand held WAAS unit I
get very good resolution at walking speed, and very rapid update.