Analyses of target strength distribution on the mixed species

Author

Ogata, Masaki ; Hamano, Akira ; Theparoonrat, Yuttana

Author_Institution

Furuno Electr. Ltd., Nishinomiya

fYear

2007

fDate

16-19 May 2007

Firstpage

1

Lastpage

6

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;

fLanguage

English

Publisher

ieee

Conference_Titel

OCEANS 2006 - Asia Pacific

Conference_Location

Singapore

Print_ISBN

978-1-4244-0138-3

Electronic_ISBN

978-1-4244-0138-3

Type

conf

DOI

10.1109/OCEANSAP.2006.4393871

Filename

4393871