[time-nuts] High accuracy? GPS position
GandalfG8 at aol.com
GandalfG8 at aol.com
Wed Sep 9 21:54:12 UTC 2009
In a message dated 09/09/2009 22:25:22 GMT Daylight Time,
dave.g0dja at tiscali.co.uk writes:
How do you KNOW your position to such accuracy? Is it in fact possible
> to survey your position to that accuracy by any independent means?
>
> If, for example, you use official survey marks to determine your
> position by direct measurement, are the survey marks really that
> accurate?
Yes, I have a National Survey Bolt mark just down the road from me.
--------------------
I'm not sure that completely answers the question.
Even if we assume that the position of the bolt mark is known to an
accuracy of an inch or so, have you measured your antenna position in relation to
that with sufficient precision in distance and bearing so as to transfer
that accuracy to the antenna location?
regards
Nigel
GM8PZR
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