Accession Number:

ADA046689

Title:

Spatial Coherence of a Signal Reflected from a Time-Varying Random Surface.

Descriptive Note:

Technical memo.,

Corporate Author:

NAVAL UNDERWATER SYSTEMS CENTER NEWPORT R I

Personal Author(s):

Report Date:

1971-02-23

Pagination or Media Count:

22.0

Abstract:

The coherence between two points of the received acoustic waveform after reflection from a time varying random surface is evaluated for the far field case. A Neumann-Pierson spectrum and an isotropic sea is considered. For the low roughness case, the coherence is computed for wind speeds from 2 to 10 knots. For the specular and non-specular direction, the coherent region is on the order of the pattern resulting from the insonified surface area. Author

Subject Categories:

  • Numerical Mathematics
  • Cybernetics
  • Acoustic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE