Application of Acoustic Signal Processing Techniques for Improved Underwater Source Detection and Localization

1988 ◽  
Author(s):  
George E. Ioup ◽  
Juliette W. Ioup ◽  
Grayson H. Rayborn
Keyword(s):  
Signal Processing ◽  
Acoustic Signal ◽  
Source Detection ◽  
Processing Techniques ◽  
Detection And Localization ◽  
Signal Processing Techniques

scholarly journals Advances in Acoustic Signal Processing Techniques for Enhanced Bowel Sound Analysis

2019 ◽  
Vol 12 ◽  
pp. 240-253 ◽  
Author(s):  
Gary Allwood ◽  
Xuhao Du ◽  
K. Mary Webberley ◽  
Adam Osseiran ◽  
Barry James Marshall
Keyword(s):  
Signal Processing ◽  
Acoustic Signal ◽  
Bowel Sound ◽  
Sound Analysis ◽  
Bowel Sound Analysis ◽  
Processing Techniques ◽  
Signal Processing Techniques

COMPARISON OF LINEAR AND ORTHOGONAL BEAMFORMER PERFORMANCE FOR THE 1993 MATCHED FIELD PROCESSING BENCHMARKS

1994 ◽  
Vol 02 (03) ◽  
pp. 187-197 ◽  
Author(s):  
JOHN M. OZARD ◽  
PETER BROUWER ◽  
TIM SCHEUER
Keyword(s):  
Signal Processing ◽  
Parabolic Equation ◽  
Acoustic Signal ◽  
Processing Parameters ◽  
Minimum Variance ◽  
Source Detection ◽  
Source Position ◽  
Matched Field Processing ◽  
Detection And Localization ◽  
Gradient Models

Results are presented for the Matched Field Processing (MFP) analysis of synthetic benchmark cases, performed by a comprehensive Acoustic Signal Processing (ASP) code used in a turnkey manner. The performance of the Generalized Bartlett Beamformer (GBB), Minimum Variance (MV), and Modified Reduced Minimum Variance (MRMV) processors incorporated in the ASP code were evaluated. Matches for replicas generated using normal mode and Parabolic Equation (PE) models produced virtually identical results. However, the choice of layered versus gradient models was shown to be a cause of sufficient mismatch and to alter the source position by several increments in range and depth if sufficiently fine layering was not employed. GBB and MRMV exhibit similar levels of robustness to mismatch, while MV showed its well-known sensitivity to mismatch. Our turnkey approach indicated that MFP techniques are relatively robust with respect to source detection and localization even when suboptimal modeling and processing parameters are used.

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