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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Location Center of Responses thus Far
From: John Germain
Date: 2001 Jul 23, 9:15 PM
From: John Germain
Date: 2001 Jul 23, 9:15 PM
Standing off beyond the expected launch paths might be advantageous!
John Germain
> ** Original Subject: Re: Location Center of Responses thus Far
> ** Original Sender: WSMurdoch@AOL.COM
> ** Original Date: Tue, 24 Jul 2001 02:43:06 +0100
> ** Original Message follows...
>
> In a message dated 7/23/01 9:05:58 PM Eastern Daylight Time,
> glendonJLM@BIGPOND.COM writes:
>
>
> > Its an optimisation problem isn't it?
> >
> > Let x be the unknown location centre
> > Let D(i) be the great circle distance between the i th member and x
> > Then we want to choose x such as to:
> > minimise{sum of [ D(i); i=1-n]}
> >
> > or, minimise{sumof[ square of D(i): i=1-n]}
> > subject to x lying between lat and lon of 0-360
> >
> > hmmm, shipping or airline companies must have tackled this one??
> >
>
> Sounds military to me. Where should I park my guided missile submarine so
> that the average time of flight to my targets is a minimum ?
>
> Bill Murdoch
>** --------- End Original Message ----------- **
>
Jersey
British Channel Islands
