Accession Number:

AD1095839

Title:

TREX13 Transmission Loss and Sea Floor Scattering Analysis Modeling

Descriptive Note:

Technical Report,01 Aug 2016,31 Jul 2019

Corporate Author:

Applied Physics Laboratory, University of Washington Seattle United States

Personal Author(s):

Report Date:

2020-10-04

Pagination or Media Count:

20.0

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.

Subject Categories:

  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE