NDLI: Bottom loss modeling for sonar performance prediction

Content Provider	IEEE Xplore Digital Library
Author	Isakson, M.J. Chotiros, N.P. Yarbrough, R.A. Piper, J.N.
Copyright Year	2011
Description	Author affiliation: Applied Research Laboratories, The University of Texas, 10000 Burnet Road Austin, TX 78713 USA (Isakson, M.J.; Chotiros, N.P.; Yarbrough, R.A.; Piper, J.N.)
Abstract	Characterizing sediment type can aid in assessing sonar performance in littoral areas. One method for sediment characterization is inverting bottom loss measurements, specifically normal incidence bottom loss from echo sounder data. In this study, bottom loss data at a range of grazing angles and frequencies were compared with different models to assess the validity of the physical models of the sediment and the effects of interface scattering. The data were taken at the Experimental Validation of Acoustic modeling techniques (EVA) sea test, conducted off the coast of Isola d'Elba, Italy in 2006. Interface roughness was concurrently measured to a high degree of accuracy with a laser profiler system mounted on a remotely operated vehicle. The data were compared with three models: a flat interface, elastic model based on geo-acoustic measurements; a flat interface, poro-elastic model based on the Biot/Stoll model; and a rough interface model based on the measured interface roughness power spectrum. The measurements were most consistent with the poro-elastic model. Scattering was found to be a significant mechanism for data taken at frequencies of 20 kHz and higher. Comparisons were also made with the APL-UW reflection and backscattering models. It was found that the APL-UW models accurately described the reflection loss at low frequencies through an unphysically low value of the sediment density which acted as proxy for poro-elastic effects. At higher frequencies, the model did not completely account for the roughness scattering. This may lead to incorrect sediment characterization for echo sounder $data.^{1}$
Starting Page	1
Ending Page	4
File Size	1138780
Page Count	4
File Format	PDF
ISBN	9781457701658
e-ISBN	9781457701641
DOI	10.1109/UT.2011.5774086
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-04-05
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Sea measurements Loss measurement Data models Sediments Acoustic measurements Reflection Scattering
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

High Frequency Sonar Equation Models For Bottom Backscatter And Forward Loss

Anisotropy of bottom loss in marine sediments

Inversion of geoacoustic profiles in thin-sediment environments from ocean bottom reflection loss data

Mid-to-high-frequency geo-acoustic inversion using bottom loss data off the west coast of India

Applications of bottom backscattering theories to experiments

Estimation of ocean bottom scattering strength using discrete eigenray matching in shallow water

Ocean bottom acoustic interactions in MCM

Measurements of the Bottom Loss Magnitude and Phase from 5 to 50 kHz and 10 to 77 degrees grazing at the Experimental Validation of Acoustic modeling techniques (EVA) Sea Test

Mapping seabed acoustic reflection and scattering coefficients using tactical sonar systems

Bottom loss modeling for sonar performance prediction

Similar Documents

High Frequency Sonar Equation Models For Bottom Backscatter And Forward Loss

Anisotropy of bottom loss in marine sediments

Inversion of geoacoustic profiles in thin-sediment environments from ocean bottom reflection loss data

Mid-to-high-frequency geo-acoustic inversion using bottom loss data off the west coast of India

Applications of bottom backscattering theories to experiments

Estimation of ocean bottom scattering strength using discrete eigenray matching in shallow water

Ocean bottom acoustic interactions in MCM

Measurements of the Bottom Loss Magnitude and Phase from 5 to 50 kHz and 10 to 77 degrees grazing at the Experimental Validation of Acoustic modeling techniques (EVA) Sea Test

Mapping seabed acoustic reflection and scattering coefficients using tactical sonar systems

Bottom loss modeling for sonar performance prediction