Thread: Reading images

We have a thread on the SC website just for this. Lots of pictures and illustrations. Take a look.
http://www.crappie.com/crappie/south...retations.html

SeaRay

Humminbird Understanding the Side Imaging View - YouTube
pretty good explanation of side imaging

Thanks SeaRay I wasn't aware of that page, guess i should go looking at other states pages!

For me it was time on the water and fishing with guys that knew how to use their electronics.

Experience on the water is the best source.Thumbs Up

Here is a tutorial from the Lowrance website that gives basic sonar function and why fish arch...

Why fish arch....(Lowrance.com sonar tutorial)

The reason fish show as an arch is because of the relationship between the fish and the cone angle of the transducer as the boat passes over the fish. As the leading edge of the cone strikes the fish, a display pixel is turned on. As the boat passes over the fish, the distance to the fish decreases. This turns each pixel on at a shallower depth on the display. When the center of the cone is directly over the fish, the first half of the arch is formed. This is also the shortest distance to the fish. Since the fish is closer to the boat, the signal is stronger and the arch is thicker. As the boat moves away from the fish, the distance increases and the pixels appear at progressively deeper depths until the cone passes the fish.

If the fish doesn't pass directly through the center of the cone, the arch won't be as well defined. Since the fish isn't in the cone very long, there aren't as many echoes to display, and the ones that do show are weaker. This is one of the reasons it's difficult to show fish arches in shallow water. The cone angle is too narrow for the signal to arch.

Remember, there must be movement between the boat and the fish to develop an arch.



Rickie

Originally Posted by SeaRay

We have a thread on the SC website just for this. Lots of pictures and illustrations. Take a look.
http://www.crappie.com/crappie/south...retations.html

SeaRay

Very helpful!!!