Accession Number:

ADA606926

Title:

Multireceiver Acoustic Communications in Time-Varying Environments

Descriptive Note:

Master's thesis

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s):

• Aydogmus, Murat

Report Date:

2014-06-01

Pagination or Media Count:

85.0

Abstract:

In this thesis, we present a two-receiver underwater acoustic communications system. It is based on the Kalman filter for equalization and tracking of acoustic channels characterized by considerable multipath. To model this channel and its dependency on the ocean environment we use the Bellhop acoustic ray tracing model. Error-correction coding is applied to the source data. Recursively updated channel estimates are used to update the state filters and tracking of the channel. It is shown that, under moderate conditions of Doppler shift and signal-to-noise SNR ratio, this algorithm is effective in tracking the channel and reconstructing the transmitted data.

Descriptors:

• *ACOUSTIC COMMUNICATIONS
• *KALMAN FILTERING
• *RECEIVERS
• *UNDERWATER ACOUSTICS
• ACOUSTIC EQUIPMENT
• ACOUSTIC WAVES
• ALGORITHMS
• CHANNELS
• ENVIRONMENTS
• EQUALIZATION
• ERROR CORRECTION CODES
• ESTIMATES
• MODELS
• OCEAN ENVIRONMENTS
• RAY TRACING
• THESES
• TRACKING

Subject Categories:

• Statistics and Probability
• Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE