Erlangen 2022 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 9: Precision Measurements and Metrology II
Q 9.1: Hauptvortrag
Montag, 14. März 2022, 16:30–17:00, Q-H11
Rotation sensors for planet Earth: Introducing ring laser gyroscopes — •Simon Stellmer1, Oliver Heckl2, and Ulrich Schreiber3,4,5 — 1Rheinische Friedrich-Wilhelms-Universität Bonn, Germany — 2Universität Wien, Austria — 3Technische Universität München, Germany — 4University of Canterbury, Christchurch, New Zealand — 5Fundamentalstation Wettzell, Bad Kötzting, Germany
The rotation rate of Earth is not as constant as it may seem: in fact, it is perturbed by various effects, ranging from astronomical and atmospheric phenomena all the way to anthropogenic climate change.
Very-long baseline interferometry (VLBI) is a well-established and highly precise method to access the rotation of Earth, but VLBI is not well-suited for continuous monitoring at high temporal resolution. This is where ring laser gyroscopes enter the stage.
In this presentation, we will introduce the working principle of ring lasers and their application in geodetic observations. We will present the latest developments and future concepts that will allow for continuous tracking of sub-daily variations in the Earth rotation rate. Such observations are in high demand in the fields of radioastronomy, geodesy, and geophysics.