NASA NTRS · 19630000102
Unmanned seismometer levels self, corrects drift errors
Abstract
Four-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.
Keep this discovery
Explore connections, maps & timelines
Sutton, G.. 1964-05-01. Unmanned seismometer levels self, corrects drift errors. https://ntrs.nasa.gov/citations/19630000102
Cite the original work for its findings. Save a collection to share your selection of sources.