HYDROACOUSTICS
ANNUAL JOURNAL |
START | NEW VOL 20 | SEARCH | STATISTICS | PAS - GDANSK DIVISION |
pp. 193-201, vol. 18, 2015 Andrzej Zak Polish Naval Academy, Gdynia, Poland Key words: orthogonal system; measurement of motorboat Abstract: Paper presents problem of modeling sound propagation tract basis on orthogonal
system of Walsh functions. Proposed method allow for determination of sound propagation
tract model which among others thing should gives possibility to prediction parameters of
sound source. First of all the technique of Walsh Transform is presented in details. The
mathematical description of Walsh Transform as well as detail description of calculation
process were presented. Secondly the example results of preliminary research carried out on
simulated signals as well as vibrations and hydroacoustics signals acquired during real
condition measurement of motorboat were presented. At the end obtained results were
discussed and direction of the future research were pointed.
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