FIX - A BEAMFORMING TECHNIQUE FOR LINE ARRAYS WITH MISSING ELEMENTS

Authors
  1. Stockhausen, J.B.
  2. Farrell, J.B.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
The document describes in detail a new technique for reducing the performance degradation due to non-functional or overly noisy elements in a line array of hydrophones. The new technique is called "FIX", which is an acronym for Fourier Interpolation of eXcitations. The FIX technique uses information from all of the functioning elements, and its algorithm is independent of the configuration of the missing elements. This procedure can then be followed by conventional filled-array beamforming. In terms of bias and random errors in predicted beampowers, the procedure yields results comparable to several more familiar compensation techniques for nearly isotropic fields. It exhibits a definite advantage relative to the other techniques, however, for fields which are highly anisotropic.
Report Number
DREA-TM-84-O — Technical Memorandum
Date of publication
15 Aug 1984
Number of Pages
34
DSTKIM No
84-03869
CANDIS No
122909
Format(s):
Microfiche filmed at DSIS;Originator's fiche received by DSIS;Hardcopy

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