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Abstract
This paper presents a calibration technique of underwater acoustic transducers, hydroacoustics, known as three-transducer spherical-wave reciprocity and performs an assessment of the type B standard uncertainty of the results obtained for the frequency measurement used.
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Details
1 Laboratório de Ultrassom (Labus), Diretoria de Metrologia Científica (Dimci), Instituto Nacional de Metrologia, Qualidade e Tecnologia (Inmetro), Brazil
2 Laboratório de Instrumentação Oceanográfica(LIOc), Universidade Federal do Rio de Janeiro (UFRJ), Brazil