HIGH RESOLUTION BROADBAND FIELD DIRECTIONALITY MAPPING USING STEERED COVARIANCE MATRICES

Authors
  1. Krolik, J.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);Concordia Univ, Montreal QUE (CAN) Dept of Electrical and Computer Engineering
Abstract
The research concerns the development of methods for reducing the threshold observation time required to perform high resolution broadband field directionality mapping using a passive sonar array. The proposed techniques are based on a space-time statistic called the steered covariance matrix (STCM). The STCM, like the well-known cross-spectral density matrix (CSDM), has asymptotic properties which facilitate high resolution field directionality mapping. In broadband settings, however, the STCM has the advantage that it can be estimated with much greater statistical stability than the CSDM. In this report, the STCM is used in conjunction with minimum variance and linear predictive spectral estimation to obtain the steered mimimum variance (STMV) and steered linear prediction (STLP) methods. TRUNCATED
Report Number
DREA-CR-89-421 — Contractor Report
Date of publication
15 Jun 1989
Number of Pages
142
DSTKIM No
89-03495
CANDIS No
61392
Format(s):
Hardcopy;Originator's fiche received by DSIS

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