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http://dx.doi.org/10.5657/KFAS.2021.1036

Improved FOM (Figure of Merit) Performance Characteristics of a Linear Array Underwater Acoustic Transducer with a Gradual Wedge-shaped Tail Mass  

Lee, Dae-Jae (Division of Marine Production System Management, Pukyong National University)
Publication Information
Korean Journal of Fisheries and Aquatic Sciences / v.54, no.6, 2021 , pp. 1036-1044 More about this Journal
Abstract
A linear array acoustic transducer with 12 tonpilz elements mounted independently on a gradual wedge-shaped tail mass was fabricated, tested and analyzed. The compensated transducer, which is modified by including a series inductance of 137 µH in the developed linear array transducer, attained improved figure of merit (FOM) performance characteristics compared with the uncompensated transducer. The four resonant frequency bands were identified from the measured FOM curve. The FOM response patterns over the frequency ranges of 31 to 40 kHz and 50 to 60 kHz were relatively uniform, whereas sharp resonance peaks were observed at around 73 kHz and 84 kHz. These results indicate that the developed linear array transducer can be used as an enhanced broadband transducer of echo sounder, and the operating frequency can be selected for more effective echo surveys in the fishing ground.
Keywords
FOM performance; Linear array transducer; Wedge-shaped tail mass; Matching inductance;
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Times Cited By KSCI : 2  (Citation Analysis)
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