Predicting the Effects of Random Ocean Dynamic Processes on Underwater Acoustic Sensing and Communication.

ABSTRACT: Acoustics is the primary means of sensing and communication in the ocean for humans and many marine animals. Natural fluctuations in the ocean, however, degrade these abilities in ways that have been previously difficult to forecast. Here, we address this issue by predicting sensing and communication degradation in terms of acoustic attenuation, dispersion and temporal decorrelation at typical operational ranges and frequencies in continental-shelf environments. This is done with analytic expressions derived from first physical principles. The analytic expressions provide the statistics of the acoustic field after forward propagating through an ocean waveguide containing 3-D random inhomogeneities from the independent or combined effects of rough sea-surfaces, near-sea-surface air bubbles

SUBMITTER: Cho B 

PROVIDER: S-EPMC7066198 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature