Accession Number:

AD0749940

Title:

Estimation of Noise Directionality Spectrum.

Descriptive Note:

Research rept.,

Corporate Author:

NAVAL UNDERWATER SYSTEMS CENTER NEWPORT R I

Personal Author(s):

Report Date:

1972-09-01

Pagination or Media Count:

38.0

Abstract:

Estimation of the noise directionality spectrum directly from the cross-spectral matrix of the received processes at the array elements is investigated. No preprocessing of the element outputs, such as beamforming, is presumed. The integrated-squared-error between the estimated noise directionality spectrum and the true noise directionality spectrum is minimized. Some of the fundamental limitations of the technique, in terms of ambiguity and ill-conditioned matrices, are pointed and illustrated by example for an equi-spaced line array. Author

Subject Categories:

  • Cybernetics
  • Acoustic Detection and Detectors
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE