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A model-free method for mass spectrometer response correctionA new method for correction of mass spectrometer output signals is described. Response-time distortion is reduced independently of any model of mass spectrometer behavior. The delay of the system is found first from the cross-correlation function of a step change and its response. A two-sided time-domain digital correction filter (deconvolution filter) is generated next from the same step response data using a regression procedure. Other data are corrected using the filter and delay. The mean squared error between a step response and a step is reduced considerably more after the use of a deconvolution filter than after the application of a second-order model correction. O2 consumption and CO2 production values calculated from data corrupted by a simulated dynamic process return to near the uncorrupted values after correction. Although a clean step response or the ensemble average of several responses contaminated with noise is needed for the generation of the filter, random noise of magnitude not above 0.5 percent added to the response to be corrected does not impair the correction severely.
Document ID
19880032656
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Shykoff, Barbara E.
(State Univ. of New York Buffalo, NY, United States)
Swanson, Harvey T.
(New York, State University Buffalo, United States)
Date Acquired
August 13, 2013
Publication Date
November 1, 1987
Publication Information
Publication: Journal of Applied Physiology
Volume: 63
ISSN: 0161-7567
Subject Category
Instrumentation And Photography
Accession Number
88A19883
Funding Number(s)
CONTRACT_GRANT: NAS9-16042
Distribution Limits
Public
Copyright
Other

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