A STUDY OF FILLED AND SPARSE LINE ARRAY BEAMFORMERS

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Authors
  1. Walker, R.S.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
The paper considers various methods of frequency-domain beamforming for a line array of hydrophones. The line array geometries are restricted to uniform sensor spacings (i.e. filled array) or a geometry in which sensors are eliminated from the filled structure (sparse array). The methods to be examined include the conventional phase-to-plane beamformer (CB), the data-adaptive Minimum Variance beamformer (MVB), and the Principal-Solution beamformer (PSB). The beamformer performance is assessed on the ability of the beamformer to map the directionality of the acoustic field, and the ability to detect narrowband, directional signals against the noise. The PSB has advantages over the CB for mapping of the directionality, however, no advantage exists in the signal detection application. TRUNCATED
Report Number
DREA-TM-80-G — Technical Memorandum
Date of publication
15 Sep 1980
Number of Pages
74
DSTKIM No
80-03406
CANDIS No
91084
Format(s):
Document Image stored on Optical Disk;Originator's fiche received by DSIS

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