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    Re: Symmedian point -earliest reference in navigation
    From: David Pike
    Date: 2018 Oct 14, 15:17 -0700

    Bill Lionheart you wrote:

    I will eventually find a geometric construction for this I expect.

    How about joining the symmedian point to the DR position and splitting it in the ratio of the recognised bands of error of each.  That's roughly what we did in the V Force, but then there weren't many rocks to fly into at 40,000ft plus.  For a single PL we took the perpendicular from the PL to the DR posn, and for 2Pls we took a line from where they crossed to the DR posn.  DaveP. 

       
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