Fish detection by the acoustic scintillation technique

Abstract

A theoretical study of fish detection by the acoustic scintillation technique is described. Based upon the forward-scattering-of-sound principle, an algorithm is derived to extract information such as fish number and fish swimming speed from measured signals. Comparison with actual daily gillnet catches shows that the scintillation system may be a good candidate for fish counts in a riverine or narrow channel. © 1996 International Council for the Exploration of the Sea.