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TREX13 Transmission Loss and Sea Floor Scattering Analysis Modeling

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Technical Report,01 Aug 2016,31 Jul 2019

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Applied Physics Laboratory, University of Washington Seattle United States

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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.

Subject Categories:

  • Radiofrequency Wave Propagation

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