A technique is presented for estimating the in situ target strength of fish by statistical manipulation of the received echoes from a single beam transducer. The merits, limitations, and possible bias of the techniques are discussed and results are presented for blue whiting (Micromesistius poutassou (Risso)) which are considered to be precise to within ± 1 dB.
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Betsey Robinson (1982) studied this question.