Detection Performance of the Steered, Adaptive, Subarray Beamformer

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Authors
  1. Swingler, D.N.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);Saint Mary's Univ, Halifax NS (CAN) Div of Engineering
Abstract
The detection performance of the steered, minimum variance, subarray beamformer is examined via numerical simulations, with specific reference to the impact of four different subarray geometries. Additionally the advantages of employing a quadratic constraint are examined. The measures used to elucidate performance include output SNR, array gain, and the detection index. The most salient result is that the beamformer with contiguous subarrays of differing lengths (referred to herein as SA2M), and its quadratically-constrained counterpart, appear to offer the best overall performance in terms of their ability to null close interferers while offering freedom from the type of artifacts that potentially bedevil the other subarray beamformers under test.
Keywords
Adaptive signal processing;Subarray beamformers;Steered covariance
Report Number
DREA-CR-1999-004 — Contractor Report
Date of publication
01 Jan 1999
Number of Pages
45
DSTKIM No
99-01731
CANDIS No
511650
Format(s):
Hardcopy;Document Image stored on Optical Disk

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