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Some aspects of krill acoustic sampling

Gorska G.

Hydroacoustics

1997

Vol. 1

27--30

In this paper the coherent structure of the first-order scattered signal is analysed and the influence of orientation distribution form on the signaI energy is studied in the case of dense krill aggregation. In large krill concentration case the errors in krill abundance estimation due to neglecting of coherent addition of echoes are evaluated. The importance of consideration of the orientation distribution shape in krill abundance estimation is shown.