Accession Number:

ADA571647

Title:

MURI: Impact of Oceanographic Variability on Acoustic Communications

Descriptive Note:

Corporate Author:

SCRIPPS INSTITUTION OF OCEANOGRAPHY LA JOLLA CA MARINE PHYSICAL LAB

Personal Author(s):

Report Date:

2011-09-01

Pagination or Media Count:

15.0

Abstract:

LONG-TERM GOALS Couple together analytical and numerical modeling of oceanographic and surface wave processes, acoustic propagation modeling, statistical descriptions of the waveguide impulse response between multiple sources and receivers, and the design and performance characterization of underwater acoustic digital data communication systems in shallow water. OBJECTIVES Develop analyticalnumerical models, validated with experimental data, that relate short-term oceanographic variability and sourcereceiver motion to fluctuations in the waveguide acoustic impulse response between multiple sources and receivers and ultimately to the capacities of these channels along with space-time coding and adaptive modulationdemodulation algorithms that approach these capacities. APPROACH The focus of this research is on how to incorporate an understanding of short-term variability in the oceanographic environment and sourcereceiver motion into the design and performance characterization of underwater acoustic, diversity-exploiting, digital data communication systems. The underlying physics must relate the impact of a fluctuating oceanographic environment and sourcereceiver motion to fluctuations in the waveguide acoustic impulse response between multiple sources and receivers and ultimately to the channel capacity and the design and performance characterization of underwater acoustic digital data communication systems in shallow water.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE