echogram segment from the 2007 lake trout tracking
surveys on Lake Opeongo. The left panel
shows the recorded echogram from the SM20 multibeam
sonar. The small red circles denote fish
targets. Pulses from the 200 kHz tags are
visible as red flashes within the beam where the
tagged lake trout is positioned. The right
most panels are the recorded echograms from the
EK60 70 kHz and 120 kHz split-beam systems synchronized
with the SM20. Use the "Back"
button to reverse the movie 10 frames.