Assigning values of target strength and equivalent beam angle in acoustic surveys of fish
Working paper
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http://hdl.handle.net/11250/104848Utgivelsesdato
1991Metadata
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This report is not to be cited without prior reference to the authorSammendrag
Contrary to popular opinion, the equivalent beam angle (~) is not
determined solely by the transducer directivity. Rather, like the target
strength TS, it also depends on the scattering properties of the target fish,
but relative to the detection threshold. The connection between the two
quantities, (~) and TS, is elucidated. A method of application is illustrated
through an example.