Adaptive Bubble Pulse Cancellation From Underwater Explosive Charge Acoustic Signals

Explosive charges are widely used as sound sources in underwater acoustic experiments. Unfortunately, the received shock wave in the observation is often corrupted by a series of bubble pulses. Canceling these bubble pulses can greatly enhance the quality of the observation and will be helpful for m...

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Bibliographic Details
Published in:IEEE journal of oceanic engineering 2011-07, Vol.36 (3), p.447-453
Main Authors: Ge, Feng-Xiang, Zhang, Yan, Li, Zhenglin, Zhang, Renhe
Format: Article
Language:English
Subjects:
Acoustics
Adaptive filtering
Adaptive filters
Autocorrelation functions
bubble pulse
Bubbles
Cancellation
Correlation
Delay effects
Explosions
Explosives
Least squares method
Marine
normal modes
Representations
Shock waves
Sonar equipment
Sound sources
Time frequency analysis
time-frequency representation
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Summary:Explosive charges are widely used as sound sources in underwater acoustic experiments. Unfortunately, the received shock wave in the observation is often corrupted by a series of bubble pulses. Canceling these bubble pulses can greatly enhance the quality of the observation and will be helpful for many practical applications. A method based on the adaptive filtering is presented to fit the bubble pulses in the observation, in which the filter coefficients are updated by an adaptive least squares approach. The bubble pulses are then subtracted from the observed signal. The autocorrelation functions, time-frequency representation, and extracted mode 1 and mode 2 of the filtered observation show that the bubble pulses can be effectively canceled.
ISSN:0364-9059
1558-1691
DOI:10.1109/JOE.2011.2143290