Accession Number:

ADA183099

Title:

Path-Integral Treatment of Acoustic Mutual Coherence Functions for Rays in a Sound Channel,

Descriptive Note:

Corporate Author:

LA JOLLA INST CA CENTER FOR THE STUDY OF NONLINEAR DYNAMICS

Personal Author(s):

• Dashen, Roger
• Flatte, Stanley M.
• Reynolds, Stephen A.

Report Date:

1985-05-01

Pagination or Media Count:

7.0

Abstract:

The mutual coherence function MCF of the acoustic wavefunction from a point source is derived by the path-integral technique for transmission in the presence of a sound channel. Separations in time, transverse horizontal position, vertical position, and acoustic frequency are treated. Approximate coherence times, lengths, and bandwidths due to internal-wave fluctuations are derived. The MCF of frequency is explicitly evaluated for fluctuations due to internal waves. The shape of an ensemble-averaged pulse is derived from the MCF of frequency. Reprints.

Descriptors:

• *ACOUSTIC WAVES
• *INTERNAL WAVES
• *WAVE FUNCTIONS
• ACOUSTIC CHANNELS
• ACOUSTICS
• AUDIO FREQUENCY
• BANDWIDTH
• COHERENCE
• HORIZONTAL ORIENTATION
• POSITION(LOCATION)
• REPRINTS
• SCHRODINGER EQUATION
• SOURCES
• TRANSVERSE
• VARIATIONS
• VERTICAL ORIENTATION

Subject Categories:

• Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE