The returned s onar echoes are di splayed on the screen. As a new echo is received, the historical data scrolls across the screen.
Understanding the Sonar Display
It is im portant to u nderstand th e sign ificance of the display. The display does not show a literal 3- dimensional re presentation o f what is under the water. Each vertical band of dat a received by the control head and plotted on the display represents something that was detected by a sonar return at a particular time. As both the boat and the targets (fish) may be moving, the returns are only showing a pa rticular s egment of tim e w hen o bjects were detected, no t exactly wh ere those o bjects are in relation to other objects shown on the display.
What’s On the Sonar Display | 6 |
