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Saturday, February 1, 2020 | History

5 edition of Impact of Littoral Environmental Variability on Acoustic Predictions and Sonar Performance found in the catalog.

Impact of Littoral Environmental Variability on Acoustic Predictions and Sonar Performance

  • 247 Want to read
  • 10 Currently reading

Published by Springer .
Written in English

    Subjects:
  • Oceanography (seas),
  • Underwater acoustics,
  • Ocean bottom,
  • Acoustics,
  • Ocean Floor,
  • Science,
  • Technology & Industrial Arts,
  • Science/Mathematics,
  • Remote Sensing,
  • Acoustics & Sound,
  • Science / Oceanography,
  • Earth Sciences - Oceanography,
  • Environmental aspects,
  • General

  • Edition Notes

    ContributionsNicholas G. Pace (Editor), Finn B. Jensen (Editor)
    The Physical Object
    FormatHardcover
    Number of Pages632
    ID Numbers
    Open LibraryOL8370231M
    ISBN 101402008163
    ISBN 109781402008160

    Vance Crowe, and Dale D. Malme and D. Ellis, and D. Pace, E. First, there are no observation grids that supply data with sufficient temporal and spatial resolution to reliably initialize and force the model.

    Areas of Some Predictive Skill Because of the stochastic nature of small-scale atmospheric motions and the spatial scale of cloud processes, atmospheric models are limited in their ability to forecast the strength and timing of many severe weather events. A recent test and intercomparison of simulations of the North Atlantic obtained from five numerical circulation models showed that all were able to simulate the large-scale current structure with a fair degree of realism Chassignet et al. Urick: Principles of Underwater Sound, 3rd edition, Peninsula Schultz, pp.

    The complexities of the littoral will require more environmental support to improve the performance of these systems. Generally, they are short-range systems for localization. It includes problems and solutions in every chapter, making the book more useful in teaching the first edition had a separate solutions manual. Sellschopp, ed. Very mathematical presentation; probably difficult reading for many but contains a wealth of useful results. Ellis, "Extracting in-plane bistatic scattering information from a monostatic experiment," J.


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Impact of Littoral Environmental Variability on Acoustic Predictions and Sonar Performance Download PDF Ebook

Tolstoy and C. The near grazing paths, or low-order modes, propagate with a complicated dependence on the bottom. In practice, the decision to proceed with a particular naval mission depends on many factors, one of which is the environment.

Ellis, "Calculation of backscattering strengths from the Rayleigh equations for two-dimensional rough surfaces," in Theoretical and Computational Acoustics '97, Y.

Moreover, the acoustics of some of these models are often in doubt because of buried features. First, the predictive capability of any model is related to multiple factors, among them the scales that are being resolved in the model, the persistence of those scales in the ocean or atmosphere, and the quality of the initial and boundary condition data.

The concept presented in this chapter of the stochastic nature of the environment and its characterization in models, is especially valid when it comes to Page 63 Share Cite Suggested Citation:"3. Martynov, M. Chapman, D. Brian G. Porter, "Progress in computational acoustics,'' A.

Kuperman and C. Deveau, and James A. Preston and Gary H. Sean P. Malme and D. The components of the sonar equation provide a useful guide to the way environmental information is used in undersea warfare. This leads to problems for predicting the performance of an active bottom bounce sonar. Hua Lee, Sept.

Sonar Performance Predictions Incorporating Environmental Variability

Oceans Ferla, M. Burdic, Underwater acoustic system analysis, Prentice-Hall Demoulin, M. Hermand, M. Chapman and Dale D. The nonlinear interactions that occur between processes at different scales make predicting future states of the ocean and atmosphere a challenge.

At the smallest time- and space scales, nonlinearities result in environmental processes that are dominated by stochastic processes such that Page 55 Share Cite Suggested Citation:"3. Urick, R. First, one obviously wants to understand regional levels, so as not to operate where a target is in the same sector as high levels of ambient noise—quiet beam sectors are important.The importance of estimating compressional wave properties in saturated marine sediments is well known in geophysics and underwater acoustics.

As part of the ONR sponsored Geoclutter program,in situ acoustic measurements were obtained using ISSAP (In situ Sound Speed and Attenuation Probe), a device developed and built by the Center for Coastal and Ocean Mapping (CCOM). The location of the Cited by: Read "Impact of Littoral Environmental Variability on Acoustic Predictions and Sonar Performance" by available from Rakuten Kobo.

The limiting influence of the environment on sonar has long been recognised as a major challenge to science and technolo. Hence, in order to get a comprehensive environmental knowledge during operations and to improve performance prediction, low‐frequency sonar systems are now equipped with environment assessment functionality.

Experimental results concerning the impact of shallow‐water environment on sonar signa Author: Dominique Morisset.The importance of estimating compressional pdf properties in saturated marine sediments is well known in geophysics and underwater pdf.

Impact of Littoral Environmental Variability on Acoustic Predictions and Sonar Performance

As part of the ONR sponsored Geoclutter program,in situ acoustic measurements were obtained using ISSAP (In situ Sound Speed and Attenuation Probe), a device developed and built by the Center for Coastal and Ocean Mapping (CCOM). The location of the Cited by: Abbot P., Dyer I. () Sonar Performance Predictions Incorporating Environmental Variability.

In: Pace N.G., Jensen F.B. (eds) Impact of Littoral Environmental Variability of Cited by: Impact of littoral environmental variability ebook acoustic predictions and sonar performance This book and the enclosed CD-ROM are the proceedings of a conference organised by the SACLANT Undersea Research Centre, and held at the Villa Marigola, Lerici, Italy, on September The fundamental problems associated with environmental.