A bistatic, high‐frequency, under‐ice, acoustic scattering model. I: Theory

1989 ◽  
Vol 85 (5) ◽  
pp. 1903-1911 ◽  
Author(s):  
Garner C. Bishop
Keyword(s):  
High Frequency ◽  
Acoustic Scattering ◽  
Scattering Model

An acoustic scattering model for stratification interfaces

2021 ◽  
Vol 150 (6) ◽  
pp. 4353-4361
Author(s):  
Elizabeth Weidner ◽  
Thomas C. Weber
Keyword(s):  
Acoustic Scattering ◽  
Scattering Model

An acoustic scattering model for forests.

1991 ◽  
Vol 90 (4) ◽  
pp. 2368-2368
Author(s):  
James C. Rogers ◽  
Pu Chen ◽  
Arnold Mueller
Keyword(s):  
Acoustic Scattering ◽  
Scattering Model

scholarly journals Measurements of acoustic scattering from zooplankton and oceanic microstructure using a broadband echosounder

2009 ◽  
Vol 67 (2) ◽  
pp. 379-394 ◽  
Author(s):  
Andone C. Lavery ◽  
Dezhang Chu ◽  
James N. Moum
Keyword(s):  
High Frequency ◽  
System Performance ◽  
Pulse Compression ◽  
Acoustic Scattering ◽  
Single Frequency ◽  
Frequency Range ◽  
Range Resolution ◽  
Continuous Frequency ◽  
Processing Techniques ◽  
Signal Processing Techniques

Abstract Lavery, A. C., Chu, D., and Moum, J. N. 2010. Measurements of acoustic scattering from zooplankton and oceanic microstructure using a broadband echosounder. – ICES Journal of Marine Science, 67: 379–394. In principle, measurements of high-frequency acoustic scattering from oceanic microstructure and zooplankton across a broad range of frequencies can reduce the ambiguities typically associated with the interpretation of acoustic scattering at a single frequency or a limited number of discrete narrowband frequencies. With this motivation, a high-frequency broadband scattering system has been developed for investigating zooplankton and microstructure, involving custom modifications of a commercially available system, with almost complete acoustic coverage spanning the frequency range 150–600 kHz. This frequency range spans the Rayleigh-to-geometric scattering transition for some zooplankton, as well as the diffusive roll-off in the spectrum for scattering from turbulent temperature microstructure. The system has been used to measure scattering from zooplankton and microstructure in regions of non-linear internal waves. The broadband capabilities of the system provide a continuous frequency response of the scattering over a wide frequency band, and improved range resolution and signal-to-noise ratios through pulse-compression signal-processing techniques. System specifications and calibration procedures are outlined and the system performance is assessed. The results point to the utility of high-frequency broadband scattering techniques in the detection, classification, and under certain circumstances, quantification of zooplankton and microstructure.

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