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Acquisition and analysis of accelerometer dataAcceleration data reduction must be undertaken with a complete understanding of the physical process, the means by which the data are acquired, and finally, the calculations necessary to put the data into a meaningful format. Discussed here are the acceleration sensor requirements dictated by the measurements desired. Sensor noise, dynamic range, and linearity will be determined from the physical parameters of the experiment. The digitizer requirements are discussed. Here the system from sensor to digital storage medium will be integrated, and rules of thumb for experiment duration, filter response, and number of bits are explained. Data reduction techniques after storage are also discussed. Time domain operations including decimating, digital filtering, and averaging are covered, as well as frequency domain methods, including windowing and the difference between power and amplitude spectra, and simple noise determination via coherence analysis. Finally, an example experiment using the Teledyne Geotech Model 44000 Seismometer to measure from 1 Hz to 10(exp -6) Hz is discussed. The sensor, data acquisition system, and example spectra are presented.
Document ID
19910003105
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Verges, Keith R.
(Teledyne Geotechnical Dallas, TX, United States)
Date Acquired
September 6, 2013
Publication Date
August 1, 1990
Publication Information
Publication: NASA, Marshall Space Flight Center, Measurement and Characterization of the Acceleration Environment on Board the Space Station
Subject Category
Spacecraft Instrumentation
Accession Number
91N12418
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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