Accession Number:

AD0749939

Title:

Resolving the Directional Ambiguities of a Line Array of Hydrophones.

Descriptive Note:

Research rept.,

Corporate Author:

NAVAL UNDERWATER SYSTEMS CENTER NEWPORT R I

Personal Author(s):

Report Date:

1972-09-14

Pagination or Media Count:

22.0

Abstract:

A technique for estimating the angular power distribution of the background noise field by means of a line array of hydrophones is presented. The inherent ambiguities of the line array response are resolved by making measurements at more than one orientation of the array and by combining all the measurements to yield an estimate with least-squares error. The necessary data processing to be applied to actual measurements of beam output powers is summarized in a single matrix that can be precomputed for a given array and stored. Examples of the technique, extensions to use of a priori estimates of the power distribution, and weighted errors are included. Author

Subject Categories:

  • Acoustic Detection and Detectors
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE