TREX13 Transmission Loss and Sea Floor Scattering Analysis Modeling

Abstract

This work focuses on data basing and analyzing mid-frequency acoustic data collected on vertical line arrays (VLAs) during the Target and Reverberation Experiment in 2013 (TREX13). Data was collected for both a seafloor-mounted source and a ship towed source. The signals received from the fixed source were incorporated into a common database with the reverberation data measured for the same transmissions. This database was used to analyze the transmission loss (TL) as a function of time to understand the impacts of changing environmental conditions on mid-frequency propagation and reverberation. The data from the towed-source was used to model reverberation associated with the Doppler-shifted signals. The transmission loss as a function of range was also used to develop a geoacoustic model of the seafloor that accounts for the spatial variability of the seafloor properties.

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Document Details

Document Type
Technical Report
Publication Date
Oct 04, 2020
Accession Number
AD1095839

Entities

People

  • Brian T. Hefner

Organizations

  • University of Washington Applied Physics Laboratory

Tags

Communities of Interest

  • Air Platforms
  • C4I
  • Ground and Sea Platforms
  • Sensors

DTIC Thesaurus Topics

  • Acoustic Waves
  • Acoustics
  • Climate Change
  • Doppler Effect
  • Doppler Radar
  • Frequency
  • Frequency Bands
  • Grazing Angles
  • Measurement
  • Perturbation Theory
  • Physics
  • Physics Laboratories
  • Radar
  • Scattering
  • Seabed
  • Transmission Loss
  • Waves

Readers

  • Acoustical Oceanography.