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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. California Institute of Technology . (Unpublished) http://resolver.caltech.edu/CaltechEERL:1971.EERL-71-05

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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.


Item Type:Report or Paper (Technical Report)
Additional Information:PB 205 369
Group:Earthquake Engineering Research Laboratory
Record Number:CaltechEERL:1971.EERL-71-05
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.
ID Code:26408
Collection:CaltechEERL
Deposited By: Imported from CaltechEERL
Deposited On:19 Feb 2008
Last Modified:26 Dec 2012 13:57

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