Abstract:Measurement of the density of populations of particles or organisms in suspension in a fluid has been a matter of interest for some years. T h i s paper outlines some of the underlying principles involved in using acoustic backscatter and gated, echo-squared integration to perfom such measurements. It presents the Gamma distribution as the statistical descriptor for the integrator output. It then describes the design of a broad-band, high-frequency sonar devised for the estimation, particularly, of plankton po… Show more
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