NavList:
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: Bill Murdoch
Date: 2001 Jul 23, 7:45 PM
From: Bill Murdoch
Date: 2001 Jul 23, 7:45 PM
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
