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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: That darned old cocked hat
From: George Huxtable
Date: 2010 Dec 11, 14:05 -0000
From: George Huxtable
Date: 2010 Dec 11, 14:05 -0000
George Brandenburg wrote
"Sorry, but now I think you've got it wrong because you're playing John
Karl's game of actually measuring three specific LOPs. In such a case you
have to calculate the probability contours, and you will not get exactly
25% probability contained within the triangle. If the lines almost
intersect the probability will approach zero even though this appears to be
a good outcome. If the lines miss by a wide margin the probability of
including the location will be large."
I was not proposing to "measure three specific LOPs". If that was how it
came across, then I must have explained it badly.
"Your 25% probability of inclusion applies to an average over all possible
LOP triplets. In this game you measure N LOP triplets where N is a very
large number. The larger the number N of measurements taken, the closer you
will get to the ideal 25% figure."
That is exactly what I was proposing.
George (H)
contact George Huxtable, at george{at}hux,me.uk
or at +44 1865 820222 (from UK, 01865 820222)
or at 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK.
