A Review of Some Developments in Ray Tracing at the Naval Air Development Center

Abstract

The Naval Air Development Center has a comprehensive ray-tracing program which has been extensively used for a number of years not only by our own laboratory, but also by other naval activities and private contractors. In this paper I shall present a brief overall description of the program and shall then describe in somewhat more detail the so-called Target Ray Routine, which searches for and computes the various rays which propagate from a specified source location to a specified receiver location, and combines the rays to compute an effective resultant propagation loss. This will be followed by a few comparisons of ray theory with normal mode theory and with experimental data. The paper will conclude with a few remarks about a suggested technique for ray computation based on a more general type of velocity profile than is currently being used.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1969
Accession Number
AD1113253

Entities

People

  • C. L. Bartberger

Organizations

  • Naval Air Warfare Center Warminster

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Bottom Bounce
  • Boundaries
  • Computations
  • Computer Programs
  • Computers
  • Convergence
  • Convergence Zones (Sonar)
  • Curve Fitting
  • Deep Oceans
  • Digital Computers
  • Discontinuities
  • Experimental Data
  • Intensity
  • Multipath Transmission
  • Procedures (Computers)
  • Ray Tracing
  • Travel Time

Readers

  • Technical Research and Report Writing.
  • Theoretical Analysis.
  • Wave Propagation and Nonlinear Chaotic Dynamics.