Re: [PSUBS-MAILIST] Blue-green laser (was: Empress of Ireland)

[Warren Greenway <opensourcesub@yahoo.com>]

You can use reconstructive sonar to create a detailed
3D image of your surroundings. The problem is that
this
is just out of the reach of all of us at this time. If
someone publishes the reconstruction algorithms I
might
be willing to give it a shot. So far only the US 
military has done this work extensively. Naturally
they
aren't releasing any usefull data.

Warren.

--- Michael B Holt <tlohm@juno.com> wrote:
> On Fri, 21 Mar 2003 10:19:16 -0800 Tim Reilly
> writes:
> >Speaking of dreaming, I was just reading a book
> called Stingray by 
> >Bill Keith, and I was wondering, if there are any
> electronics engineers
> out
> >there, if a system using a blue-green laser and
> active and passive 
> sonar
> >would be practical. 
> 
> In Busby, there's a chart showing the attentuation
> of various
> colors.    Well, I remember seeing one somewhere.  
> Blue-green
> penetrates deeper than any other color, I think.
> 
> What did that system do with the combination of
> laser and
> sonar? 
> 
> > This is my primary concern with a sub, is being 
> able to
> >see for an extended distance under water.
> 
> That's one thing that holds me back from getting
> really
> serious: around here, visibility is about a meter at
> noon
> at a depth of a meter!
> 
> 
> Mike H.
> 
> 
>
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