Title :
Analyses of target strength distribution on the mixed species
Author :
Ogata, Masaki ; Hamano, Akira ; Theparoonrat, Yuttana
Author_Institution :
Furuno Electr. Ltd., Nishinomiya
Abstract :
When we have acoustic surveys in the sea area where there are the mixed species, the wide dynamic range of TS is demanded. The reason is so that the each species has different TS range. Therefore we employed the transducer with window function weight for wide dynamic range of the TS measurement. The TS measurement dynamic range is magnified by decrease of side lobe level. There are a few kinds of fish in a sea area of a district in a high latitude , such as the north sea and the Bering Sea. But there are many kinds of fish in sea area of Southeast Asia, it complicates resources investigation by acoustic surveys.
Keywords :
aquaculture; oceanographic regions; oceanographic techniques; underwater sound; Bering Sea; North Sea; Southeast Asia; acoustic surveys; fish; mixed species; side lobe level; target strength distribution; transducer; window function weight; Acoustic devices; Acoustic measurements; Acoustic signal detection; Dynamic range; Frequency estimation; Frequency measurement; Length measurement; Marine animals; Object detection; Sea measurements;
Conference_Titel :
OCEANS 2006 - Asia Pacific
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-0138-3
Electronic_ISBN :
978-1-4244-0138-3
DOI :
10.1109/OCEANSAP.2006.4393871
