Accession Number:

AD0770186

Title:

Optimum and Adaptive Array Processing in Frequency-Wavenumber Space,

Descriptive Note:

Corporate Author:

COLORADO STATE UNIV FORT COLLINS DEPT OF ELECTRICAL ENGINEERING

Personal Author(s):

• Scharf,Louis L.
• Farden,David C.

Report Date:

1973-01-01

Pagination or Media Count:

43.0

Abstract:

In the paper a frequency-domain adaptive array structure is derived that processes data in selected regions of frequency-wavenumber space to provide a minimum mean squared error estimate of a signal component of the observed acoustic field. New stochastic convergence results are presented, indicating that the covariance ergodicity conditions invoked by Parzen to ensure strong consistency of covariance estimates also ensure convergence of the stochastic approximation algorithm for the beamformer gains. These convergence results appear to be the most readily applicable results yet obtained for algorithms that must operate on correlated data. Modified author abstract

Descriptors:

• *ACOUSTIC FIELDS
• *BEAM FORMING
• *ARRAYS
• APPROXIMATION(MATHEMATICS)
• SONAR
• SIGNAL PROCESSING

Subject Categories:

• Acoustic Detection and Detectors
• Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE