Signal Variation in a Random Medium.
Abstract
An acoustic ray-wave synthesis is developed by combining the wave theory methods of Kirchoff and Helmholtz with the ray theory methods of Sommerfeld and Runge. The result is a generalization of the Kirchoff-Helmholtz integral formulation of the wave equation in which the kernels are ray theory expressions and in which an additional term appears. The ray theory kernels represent the gross properties of the fields while the extra term represents scattering by the medium and is the additional field required for an exact solution. The acoustic ray-wave synthesis is applied to the problem of signal variation in a random medium. The problem is found to separate naturally into three regions which are designated near field, intermediate field and far field.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1975
- Accession Number
- ADA013207
Entities
People
- O. D. Grace
Organizations
- Naval Undersea Warfare Center