Sounders
Submitted by lachieH on Fri, 2015-05-29 17:33
hi everyone. Just doing a bit of science study and noticed something that makes a lot of sense. I have realized sounders use sound waves to shoot to the closest object underwater, traveling at 1500m per second and when the sound hits the object it goes back up to the boat, which does the equations which tells you how far away the objects are. I found this interesting, so I was wondering how does it recognize there is a school there? How does the sounder realize that it is not the bottom?
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Fishing the swan for bream, it's just an obsession
sandbar
Posts: 704
Date Joined: 25/10/09
Density
The density of the fish and bottom of ocean feed back a different signal. Some schools of fish are so thick and solid that you receive a false bottom image where the sonar reads the school as the bottom.
It gets better too the more you look into it
D_d_001
Posts: 1522
Date Joined: 09/03/13
basically it come up to user
basically it come up to user interpretation ...what you see on the sounder screen with the settings you have input.
meglodon
Posts: 5981
Date Joined: 17/06/10
Sounders how they work
If you are still at school, take a real big interest in physics and how sound propagation works in water.
Get a solid education and understanding of the rules of how sound travels and you will have a very good solid understanding of sounders.
scotty70
Posts: 40
Date Joined: 29/05/15
hi all cannot find one thing
hi all
cannot find one thing on an eagle cuda 360 sonar/sounder???
I know its an old model as came with boat but having major trouble reading it;...any help as too least find a manual???
bushbeaver
Posts: 159
Date Joined: 08/07/13
https://www.youtube.com/watch
https://www.youtube.com/watch?v=nT4SIax4XCA
sandbar
Posts: 704
Date Joined: 25/10/09
Farkin Easy
How To Read Your Echo Sounder, A book by John Adams. Has
been plugged heaps since it came out. No matter what sounder you have buy this book and read it!