File:U.S. and Australian mine warfare sonar performance assessment using SWAT and Hodgson Models. (IA usaustralianmine00dubs).pdf

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Original file ‎(1,239 × 1,627 pixels, file size: 9.75 MB, MIME type: application/pdf, 222 pages)

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U.S. and Australian mine warfare sonar performance assessment using SWAT and Hodgson Models.   (Wikidata search (Cirrus search) Wikidata query (SPARQL)  Create new Wikidata item based on this file)
Author
Dubsky, Barbra K.
image of artwork listed in title parameter on this page
Title
U.S. and Australian mine warfare sonar performance assessment using SWAT and Hodgson Models.
Publisher
Monterey, California: Naval Postgraduate School;Springfield, Va.: Available from National Technical Information Service
Description
Thesis advisor(s): Bourke, Robert H.; Wilson, James H.
Thesis (M.S. in Physical Oceanography) Naval Postgraduate School, Sept. 2000
Includes bibliographical references (p. 145-155)
The purpose of this thesis was to investigate a shallow coastal region to compile a detailed environmental picture of its sediment composition and water characteristics and from this model MCM sonar performance at the FBE-H exercise location as a means to determine what parameters exerted the greatest effect on performance. Seven parameters were intercompared to assess their sensitivity in detecting mines: bottom type, SSP, water depth/sonar depth, mine depth, frequency, sonars and models. Performance was assessed using several measures of effectiveness including the signal to noise ratio and initial detection range. Variations in these measures were analyzed by investigating how TL and RL responded to changing parameters. No one single parameter was identified that affected sonar performance significantly above all others. Of the environmental parameters considered, variations in bottom type exerted the most influence on TL and RL and ultimately on sonar performance. IL was clearly a significant factor when the bottom type is comprised of absorptive, fine- grained material. Of the sonar parameters, frequency exerted a significant impact on performance with TL the most sensitive term in this comparison. A higher TL associated with higher frequency reduced the signal level and consequently the bottom RL. The higher frequency displayed a stronger SNR than the lower frequency over short ranges, however the higher frequency was limited by TL at greater ranges with the lower frequency achieving greater initial detection ranges
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Subjects:
Language English
Publication date 1 September 2000, 00:00:00
Current location
IA Collections: navalpostgraduateschoollibrary; fedlink; americana
Accession number
usaustralianmine00dubs
Authority file  OCLC: 1102241662
Source
Internet Archive identifier: usaustralianmine00dubs
https://archive.org/download/usaustralianmine00dubs/usaustralianmine00dubs.pdf

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Public domain
This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

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