High frequency errors and instrument corrections of strong-motion accelerograms

Trifunac, Mihailo D. and Udwadia, F. E. and Brady, Arthur Gerald (1971) High frequency errors and instrument corrections of strong-motion accelerograms. Technical Report: CaltechEERL:1971.EERL-71-05. California Institute of Technology.

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Abstract

A study of high-frequency errors present in digitized accelerograms and an analysis of the distribution of unequally spaced, hand-digitized data indicates that the Fourier content of digitized accelerogram. data may be accurate up to about 25 cps. Two methods for accelerometer instrument correction are described: (1) a direct numerical differentiation of recorded accelerograms from which high-frequency digitization errors have been filtered out and (2) an ideal "mathematical accelerometer" with a natural frequency significantly higher than the natural frequency of the recording instrument. Although both methods give good results, the first one is recommended for the standard use.

EPrint Type:	Monograph (Technical Report)
Additional Information:	PB 205 369
Subjects:	All Records > Earthquake Engineering Research Laboratory
ID Code:	198
Deposited By:	Caltech Library System
Deposited On:	19 February 2008
Record Number:	CaltechEERL:1971.EERL-71-05
Official Persistent URL:	http://resolver.caltech.edu/CaltechEERL:1971.EERL-71-05
Usage Policy:	You are granted permission for individual, educational, research and non-commercial reproduction, distribution, display and performance of this work in any format.

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