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Re: Sensors and Zooplankton

From: "Alan and Carmel Brain" <aebrain@a...>
Date: Fri, 1 Jun 2001 19:26:50 +1000
Subject: Re: Sensors and Zooplankton

From: "Beth Fulton" <beth.fulton@marine.csiro.au>

>  >And normal shrimp and other
>  >zooplankton turn up beautifully on UHF
>  >active sensors, but only within half a km.
>
> Well like I said I'm not an engineer so I don't know if we've done
> something that breaks the laws of physics or what but the stuff we're
> looking at uses in excess of 150kHz to see it and its about 1.5 km
down....
> so something doesn't gel here ;)

Breaking? No.
Pushing the performance to the limit? Yes. You must have some really
powerful and up-to-date electronics there, the best that money can buy.


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