Accession Number:

AD0787629

Title:

Comparisons of Normal Mode Theory, Ray Theory, and Modified Ray Theory for Arbitrary Sound Velocity Profiles Resulting in Convergence Zones

Descriptive Note:

Corporate Author:

NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s):

Report Date:

1974-08-29

Pagination or Media Count:

197.0

Abstract:

Normal mode theory, ray theory, and modified ray theory are compared for several arbitrary velocity profiles. The normal mode theory program uses a finite difference approach to solve for the spectrum of discrete modes once an arbitrary sound velocity profile and a constant velocity fluid bottom are specified. A ray tracing program is used to find the coherent sum of rays at points of interest. Modified ray theory leading to an Airy function solution is used to correct ray theory at caustics and in adjacent shadow zones.

Subject Categories:

  • Acoustic Detection and Detectors
  • Explosions
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE