Analysis Using Bi-spectral Related Technique
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Authors
Hippenstiel, Ralph Dieter
Subjects
Spectral Estimation
Instantaneous Spectrum
Bi-spectrum
Cumulant Based Spectrum
Detection
Instantaneous Spectrum
Bi-spectrum
Cumulant Based Spectrum
Detection
Advisors
Date of Issue
1993-11
Date
1993-11
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
This report investigates the use of Bi-spectral related techniques to extract detection/classification clues from time frequency representations. Earlier results have indicated that 1.5-D spectral techniques (a degenerate version of the Bi-spectrum) has potential Signal to Noise Ratio (SNR) gain over conventional techniques. This is partially due to the rejection of Gaussian like perturbations by the cumulant based techniques. The third order moment for Gaussian zero mean random processes is essentially zero. It is assumed that (1) the independence of the Instantaneous Power Spectrum (IPS) from analytic signal representations and (2) the Gaussian character of the noise causes minimal distortion of the output vaxiables, hence permit signal characterization at low to moderate SNRs. The per rm ce is demonstrated on (1) synthetic signals and (2) on segment(s) of the NOSC data set.
Type
Technical Report
Description
Series/Report No
Department
Electrical and Computer Engineering
Identifiers
NPS Report Number
NPS-EC-93-020
Sponsors
Naval Command Control & Ocean Surveillance Center
Funder
Naval Command Control & Ocean Surveillance Center
Format
i, 57 p.: ill. ; 28 cm.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.