Accession Number : ADA302995

Title :   Mismatch, Signal-Gain Degradation and Stabilized Source Localization in Matched Field Acoustic Array Signal Processing.

Descriptive Note : Final rept.,

Corporate Author : MASSACHUSETTS UNIV LOWELL

Personal Author(s) : Byrne, Charles

PDF Url : ADA302995

Report Date : 1994

Pagination or Media Count : 17

Abstract : The use of high resolution methods of processing acoustic array data for source localization in shallow-water waveguide environments has been the focus of much research in recent years. It has been noted that, whereas these methods rely on sophisticated models of the acoustic environment, they are subject to degraded performance in the presence of mismatch, such as might occur when environmental parameters are incorrectly estimated. Estimators that have been analyzed in this way include Capon's 'maximum likelihood method' (MLM), also called the 'minimum variance distortionless response,' and the "sector-focusing' method (SFM) of Byrne. (AN)

Descriptors :   *SIGNAL PROCESSING, *ACOUSTIC ARRAYS, MATHEMATICAL MODELS, STABILITY, DEGRADATION, PARAMETERS, MAXIMUM LIKELIHOOD ESTIMATION, SIGNAL TO NOISE RATIO, WHITE NOISE, WAVEGUIDES, HIGH RESOLUTION, SHALLOW WATER, ACOUSTIC SIGNALS, UNDERWATER ACOUSTICS, ACOUSTIC DATA, ACOUSTIC FIELDS.

Subject Categories : Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE