underwater tracking

[ukfrosty]

Hi all,
I'm very new to electronics. I was reading some docs about
the tracking of fish through the oceans. Radiowaves
only seem to be feasible in shallow coastal waters.

I was wondering how hard it would be to make a shallow water
locator. One that would simply tell the receiver which direction the
tracker was in. eg. by the signal getting stronger (not depth etc)
when the antenna points in the right direction.

Thanks for any ideas, ut's purely out of interrest

 

[Yevgenip]

I posted an Electronic Neuron circuit some time ago. If you connect an antena instead of the photoresistors and put it on a motor, it will turn to the direction of the transmiting circuit. Ofcourse You will need a filter for that...

 

[Yevgenip]

http://www.electronics-lab.com/forum/index.php?board=23;action=display;threadid=2086

 

[MP1]

Do you intend to attach a transmitter on a fish or are you looking for something that will detect movement or schools of fish?

MP