Parametric Acoustic Arrays
作者:
C. C. Fox,
O. L. Akervold,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1973)
卷期:
Volume 53,
issue 1
页码: 382-382
ISSN:0001-4966
年代: 1973
DOI:10.1121/1.1982713
出版商: Acoustical Society of America
数据来源: AIP
摘要:
Parametric acoustic array performance has been demonstrated with several different transducers. Three‐inch‐diameter transducers with primary frequencies between 250 and 300 kHz have produced good parametric acoustic beams at 10, 20, and 40 kHz difference frequencies with nearly constant beamwidth across this frequency band. A parametric acoustic array operating at 20‐kHz difference frequency was compared to a 100‐kHz conventional transducer for bottom profiling capability in Lake Washington. Echograms were obtained demonstrating the capability of the lower frequency beam to produce subbottom, as well as bottom returns.
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