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Sediment Acoustics Modeling Using In Situ SAMS Data

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[Technical Report, Final Report]

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Naval sonar mission planning tools rely on simulation methods for propagationreverberation modeling. One of the main limitations in making accurate predictions is the lack of a sufficiently detailed description of the environment. These environmental parameters include the properties of the sea bottom and water column over space and time. As inputs to real-time modeling, the water column properties, i.e., the sound speed profile and sea surface roughness, can be obtained in principle through direct measurements. However, sediment geoacoustic parameters, which are the most important parameters for predicting sound propagation and reverberation in many cases, are difficult to acquire directly, especially in the mid-frequency band. Work completed here and follow-on effort can be used to support detailed sound propagation prediction and validate geoacoustic inversion models, and hence, improve the accuracy in model predictions.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Acoustics

Distribution Statement:

[A, Approved For Public Release]