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Abstract:
In previous work, a modal approach was used to study random volume scattering in a shallow channel. Here, we shall show how the effects of a rough channel surface may be included in the formulation. To include the effects of the rough surface, the modes are taken to be dependent on the range and transverse coordinates in addition to the depth coordinate. The propagation is studied in terms of the ensemble averaged two point coherence function and the equation governing the coherence function is derived. The general method for volume scattering is given in detail in the above reference. Here it is shown how the surface scattering terms may be treated in this approach. The two point coherence function is expressed as the sum over both self modal and cross modal coherence functions. The difference between the self modal coherence functions and the cross modal coherence functions is discussed. A numerical example is given using typical shallow water parameters.
| Limitations: |
 APPROVED FOR PUBLIC RELEASE |
| Description: |
Progress rept. 1 Jan-31 Oct 94 |
| Pages: |
5 |
| Report Date: |
09 NOV 94 |
| Contract Number: |
N00014-94-1-0201 |
| Report Number: |
A128892 |
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