Standard calibration of echo sounders and integrators with optimal copper spheres
Research report
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http://hdl.handle.net/11250/114414Utgivelsesdato
1983Metadata
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Calibration of fisheries echo sounders and integrators by means of optimal copper spheres is
reviewed. The standard procedure is elaborated. Maintenance of O.1 dB precision is described for a
wide range of temperatures and for untuned equipment. The method is illustrated by reference to a
calibration exercise of R/V "Michael Sars". The long-term stability of quoted, cumulative
calibration results for the same vessel witnesses to the reliability and precision of the method.
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[Fiskeridirektoratets havforskningsinstitutt]Serie
Fiskeridirektoratets skrifter, Serie Havundersøkelservol 17 no 8