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Article

Automated Quality Assessment of Interferometric Ring Laser Data

1
Department of Earth and Environmental Sciences, Ludwig Maximilian University Munich, Theresienstr. 41, D-80333 Munich, Germany
2
Geodetic Observatory Wettzell, Research Unit Satellite Geodesy, Technical University of Munich, 93444 Bad Koetzting, Germany
*
Author to whom correspondence should be addressed.
Academic Editor: Hoon Sohn
Sensors 2021, 21(10), 3425; https://doi.org/10.3390/s21103425
Received: 19 April 2021 / Revised: 7 May 2021 / Accepted: 10 May 2021 / Published: 14 May 2021
(This article belongs to the Special Issue Rotation Rate Sensors and Their Applications)
In seismology, an increased effort to observe all 12 degrees of freedom of seismic ground motion by complementing translational ground motion observations with measurements of strain and rotational motions could be witnessed in recent decades, aiming at an enhanced probing and understanding of Earth and other planetary bodies. The evolution of optical instrumentation, in particular large-scale ring laser installations, such as G-ring and ROMY (ROtational Motion in seismologY), and their geoscientific application have contributed significantly to the emergence of this scientific field. The currently most advanced, large-scale ring laser array is ROMY, which is unprecedented in scale and design. As a heterolithic structure, ROMY’s ring laser components are subject to optical frequency drifts. Such Sagnac interferometers require new considerations and approaches concerning data acquisition, processing and quality assessment, compared to conventional, mechanical instrumentation. We present an automated approach to assess the data quality and the performance of a ring laser, based on characteristics of the interferometric Sagnac signal. The developed scheme is applied to ROMY data to detect compromised operation states and assign quality flags. When ROMY’s database becomes publicly accessible, this assessment will be employed to provide a quality control feature for data requests. View Full-Text
Keywords: rotational seismology; rotation rate sensors; ring laser data processing; ROMY; data quality control; Sagnac effect rotational seismology; rotation rate sensors; ring laser data processing; ROMY; data quality control; Sagnac effect
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MDPI and ACS Style

Brotzer, A.; Bernauer, F.; Schreiber, K.U.; Wassermann, J.; Igel, H. Automated Quality Assessment of Interferometric Ring Laser Data. Sensors 2021, 21, 3425. https://doi.org/10.3390/s21103425

AMA Style

Brotzer A, Bernauer F, Schreiber KU, Wassermann J, Igel H. Automated Quality Assessment of Interferometric Ring Laser Data. Sensors. 2021; 21(10):3425. https://doi.org/10.3390/s21103425

Chicago/Turabian Style

Brotzer, Andreas, Felix Bernauer, Karl Ulrich Schreiber, Joachim Wassermann, and Heiner Igel. 2021. "Automated Quality Assessment of Interferometric Ring Laser Data" Sensors 21, no. 10: 3425. https://doi.org/10.3390/s21103425

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