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Unmanned seismometer levels self, corrects drift errorsFour-component, three-axis, feedback-controlled seismograph incorporates electronic circuitry for leveling and for monitoring the feedback signal required for servo-centering. Viscous damping of the earth-motion signal, compensation of the residual long-term drift, and centering of the seismometers are provided by automatic mechanisms.
Document ID
19630000102
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Sutton, G.
Date Acquired
August 1, 2013
Publication Date
May 1, 1964
Subject Category
Electronic Components And Circuits
Report/Patent Number
GSC-100
Report Number: GSC-100
Accession Number
63B10551
Funding Number(s)
CONTRACT_GRANT: NASW-82
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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