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Comparison of Signals from Gravitational Wave Detectors with Instantaneous Time-Frequency MapsGravitational wave astronomy relies on the use of multiple detectors, so that coincident detections may distinguish real signals from instrumental artifacts, and also so that relative timing of signals can provide the sky position of sources. We show that the comparison of instantaneous time-frequency and time-amplitude maps provided by the Hilbert-Huang Transform (HHT) can be used effectively for relative signal timing of common signals, to discriminate between the case of identical coincident signals and random noise coincidences and to provide a classification of signals based on their time-frequency trajectories. The comparison is done with a X(sup 2) goodness-of~fit method which includes contributions from both the instantaneous amplitude and frequency components of the HHT to match two signals in the time domain. This approach naturally allows the analysis of waveforms with strong frequency modulation.
Document ID
20120016962
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Stroeer, A.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Blackburn, L.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Camp, J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 25, 2013
Publication Date
June 27, 2011
Publication Information
Publication: Classical and Quantum Gravity
Volume: 28
Issue: 15
Subject Category
Astronomy
Report/Patent Number
GSFC.JA.6729.2012
Distribution Limits
Public
Copyright
Other

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