Accession Number:

ADA134097

Title:

A Horizontal Range versus Depth Solution of Sound Source Position under General Sound Velocity Conditions Using the Lloyd's Mirror Interference Pattern

Descriptive Note:

Master's thesis

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s):

Report Date:

1983-09-01

Pagination or Media Count:

68.0

Abstract:

An algorithm is developed which enables the computation of horizontal range andor depth from a submerged sound source, using ray acoustics and the Lloyds mirror interference effect. The solution is based on Snells law and involves integrating multipath sound rays to find the difference in length between the direct and surface reflected sound paths from the source to the receiver. This difference in path length is directly related to the observed Lloyds mirror interference pattern. No assumptions as to the mathematical characteristics of the sound velocity profile SVP are made nor are far field approximations used. The solution is as accurate as the SVP data input to the problem. A general computer flow chart and basic language program are provided to allow local commands the capability of premission planning based on specific operating area environmental information.

Subject Categories:

  • Theoretical Mathematics
  • Computer Programming and Software
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE