Re: The mathematics of Triangulation

From: Bobby (bobbysimpi_at_yahoo.com)
Date: 08/29/04 

Date: 29 Aug 2004 15:33:31 -0700

sbben@comcast.net (sbben) wrote in message news:<24cecc8b.0408281848.434a7d6b@posting.google.com>...
> lewis@PROBE.MITRE.ORG (Keith A. Lewis) wrote in message news:<cgok4m$9so$1@newslocal.mitre.org>...
> reciever3)
> > No, not unless the distance between receiver1 and receiver2 is very small.
>
> I dont't understand, what I'm saying is that the distance between
> reciever 3 and the imaginary line between reciever 1 and 2 is the same
> (and therefor the delay is the same) for any position of the gunshot,
> providing the gunshot occurs on the perpendicular bisector of the line
> connecting recievers 1 and 2. Is this situation a genuine exception to
> triangulating the source or is something wrong?
>
> I'll show you what i mean:
>
> (situation 1)
>
> gunshot -]
> ] 3 seconds of distance
> -] in this span
> reciver1 reciever2
> -]
> ] 6 seconds of distance
> ] in this span
> ]
> ]
> reciever3 -]
>
> Recievers 1 and 2 detect gubshot at time 0 (lets call it zero since
> the recievers dont know when the shot was fired). Reciever 3 detects
> the shot 6 seconds later.
>
> situation 2
>
> gunshot -]
> ]
> ] 6 seconds of distance
> ]
> ]
> -]
> reciver1 reciever2
> -]
> ] 6 seconds of distance
> ] in this span
> ]
> ]
> reciever3 -]
>
>
> recievers 1 and 2 detect gubshot at time 0. Reciever 3 still detects
> the shot 6 seconds later even though the position of the shot has
> changed.
>
> See what I mean? The position of the shot changed but the info that
> the recievers gathered is identical

What was wrong with my solution?

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