Title :
Great depth, high efficiency, broadband, reliable low frequency transducer for acoustical oceanography
Author :
Gall, Y. Le ; Boucher, D. ; Lurton, X. ; Bruneau, A.M.
Author_Institution :
L.S.M, DCN Ingenierie Sud, Le Brusc, France
Abstract :
Acoustical oceanography and particularly acoustic tomography (measurement of the dynamic behaviour of the ocean) has needs for low frequency, high efficiency, broadband and great depth transducers. The double-ended longitudinal Janus-Helmholtz projector designed by DCN Ingenierie Sud for active sonar widely fulfils these requirements. This article describes the frequency and depth capability optimization of this transducer. Free-flooded projectors with a first resonance below 300 Hz have then been modelled, achieved and measured
Keywords :
acoustic radiators; acoustic tomography; acoustic transducers; oceanographic equipment; oceanographic techniques; underwater sound; 300 Hz; DCN Ingenierie Sud; acoustic measurement technique; acoustic tomography; acoustics; broadband; double-ended longitudinal Janus-Helmholtz projector; dynamics; equipment; free-flooded projector; high efficiency; ocean; ocean sea underwater sound; reliable low frequency transducer; Acoustic measurements; Acoustic transducers; Frequency measurement; Oceans; Piezoelectric transducers; Resonance; Samarium; Sea measurements; Sonar measurements; Tomography;
Conference_Titel :
OCEANS '94. 'Oceans Engineering for Today's Technology and Tomorrow's Preservation.' Proceedings
Conference_Location :
Brest
Print_ISBN :
0-7803-2056-5
DOI :
10.1109/OCEANS.1994.364056
