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RE: [PSUBS-MAILIST] Passive vs active sonar
I think an engineer I know designed fish finders for
a few years. I'll ask him what he knows. Maybe it
wouldn't be that hard use the transponders with our
own systems.
Warren.
--- jbarlow@bjservices.ca wrote:
>
> If their OK, I was thinking of five or six pointed
> in all directions, even
> up possibly.
>
> You can also buy very good side scan sonar, but its
> pricey. I thought that
> perhaps the fish finder would be a poor man's way to
> roughly estimate
> bottom and collisions etc. It should be good at
> close range right? And
> that's where you would be most concerned about
> collisions etc? I would
> think that if it could see fish out to 120' then
> maybe something as large
> as a motorboat or the bottom at much greater
> ranges??
>
>
>
> Jay.
>
>
>
>
>
>
>
>
> Ward Monroe
>
>
> <wardomon@comcast.net>
> To: personal_submersibles@psubs.org
>
> Sent by:
> cc:
>
> owner-personal_submersible
> Subject: RE: [PSUBS-MAILIST] Passive vs active
> sonar
> s@psubs.org
>
>
>
>
>
>
>
>
> 27/03/2003 09:03 PM
>
>
> Please respond to
>
>
> personal_submersibles
>
>
>
>
>
>
>
>
>
>
>
>
> It depends on where you aim it. BottomLine
> fishfinders have a
> sidefinder that will see fish out to something like
> 120 feet, maybe more
> I don't exactly remember, as well as down. Wiring
> up several heads into
> an array shouldn't be much of a challenge for the
> electronically
> informed. Color displays are also available. How
> cool would that be?
>
> On Thu, 2003-03-27 at 19:36, Michael Fodor wrote:
> >
> > Yeah it is but you have to keep in mind that all
> your scanning with a
> fish finder is the bottom, and not all around you.
> >
> > jbarlow@bjservices.ca wrote:
> > A fish finder is active sonar. I don't know how
> high quality you can get
> > or how good they are these days.
> >
> > I think it might bear investigating though.
> >
> > Comments??
> >
> > Jay.
> >
> >
> >
> >
> >
> > Michael Fodor
> > To: personal_submersibles@psubs.org
> > Sent by: cc:
> > owner-personal_submersible Subject: RE:
> [PSUBS-MAILIST] Passive vs active
> sonar
> > s@psubs.org
> >
> >
> > 27/03/2003 03:31 PM
> > Please respond to
> > personal_submersibles
> >
> >
> >
> >
> >
> >
> > Are there Passive and Active sonar for sale that
> could fit into our subs
> ?
> > Any links or sites worth mentioning ?
> >
> >
> >
> >
> >
> >
> >
> >
> > Rob wrote:
> > Wow, I can finally add value. Passive sonar
> (simply put) is listing to
> > the sounds around you without doing any noise
> making of your own.
> > Active sonar is generating a sound then listening
> to the echo from
> > objects near you. Active sonar is what you get in
> the movies. That
> > "ping" noise. The active sonar I was used to
> (x-navy here) does not
> > usually sound like the classic "ping".
> >
> > -----Original Message-----
> > From: owner-personal_submersibles@psubs.org
> > [mailto:owner-personal_submersibles@psubs.org] On
> Behalf Of peter
> > mckellar
> > Sent: Thursday, March 27, 2003 2:51 AM
> > To: personal_submersibles@psubs.org
> > Subject: [PSUBS-MAILIST] Passive vs active sonar
> >
> > hi all,
> >
> > could someone please explain the difference
> between active and passive
> > sonar?
> >
> > thx in advance
> > peter
> >
> >
> >
> >
> > HGC. Michael
> >
> > The new Guardian
> >
> >
> >
> > D! o you Yahoo!?
> > Yahoo! Platinum - Watch CBS' NCAA March Madness,
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> >
> >
> >
> >
> >
> >
> >
> >
> >
> > HGC. Michael
> >
> > The new Guardian
> >
> >
> > ---------------------------------
> > Do you Yahoo!?
> > Yahoo! Platinum - Watch CBS' NCAA March Madness,
> live on your desktop!
>
>
>
>
>
>
>
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