Very High Frequency Underwater Communications and Ambient Noise in the Nearshore Region
Abstract
We propose the study of very high frequency (VHF, 100 kHz to 1 MHz) acoustic transmissionand ambient noise in the near-shore region" to support the development and operation of VHFunderwater acoustic communications. Transmissions in this frequency band are impact"ed bymm scale ocean processes, such as turbulence, surface waves, and bubbles. A combination oflaboratory and field experiments wi"ll be conducted to support characterizing and modeling theinteraction of VHF transmissions with these and other processes. Ambient" noise in thisfrequency band is not well characterized, and the levels, directional properties and statistics ofVHF ambient noise" sources will be studied in a typical Southern Californian beach and an ArcticFjord. This proposal also includes the development of a model for high duty cycle sonartransmission in the near-shore region that incorporates the effects of waveguide dispersion andsurface wave scattering on sonar performance in the sub-5 kHz band.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jun 09, 2017
- Source ID
- N000141712633
Entities
People
- Grant B Deane
Organizations
- Office of Naval Research
- United States Navy
- University of California, San Diego