Abstract
Absolute rotation rate sensing with extreme sensitivity requires a combination of several large scale gyroscopes in order to obtain the full vector of rotation. We report on the construction and operation of a four-component, tetrahedral laser gyroscope array as large as a five story building and situated in a near surface, underground laboratory. It is demonstrated that reconstruction of the full Earth rotation vector can be achieved with sub-arcsecond resolution over more than six weeks.
- Received 3 February 2020
- Accepted 18 June 2020
DOI:https://doi.org/10.1103/PhysRevLett.125.033605
© 2020 American Physical Society
Physics Subject Headings (PhySH)
Focus
Real-Time Measurements of Earth’s Spin and Tilt
Published 17 July 2020
An array of ring lasers provides the first continuous measurement of Earth’s motion from a single location.
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