The Large Ring Laser G for Continuous Earth Rotation Monitoring

被引：66

作者：

Schreiber, K. U. ^{[1
]}

Kluegel, T. ^{[2
]}

Velikoseltsev, A. ^{[1
]}

Schlueter, W. ^{[2
]}

Stedman, G. E. ^{[3
]}

Wells, J. -P. R. ^{[3
]}

机构：

[1] Tech Univ Munich, Geodat Observ Wettzell, Forsch Einrichtung Satellitengeodasie, D-93444 Bad Kotzting, Germany

[2] Geodat Observ Wettzell, Bundesamt Kartog & Geodasie, D-93444 Bad Kotzting, Germany

[3] Univ Canterbury, Dept Phys & Astron, Christchurch 8020, New Zealand

来源：

PURE AND APPLIED GEOPHYSICS | 2009年 / 166卷 / 8-9期

关键词：

Gas lasers; ring laser; Sagnac interferometry; earth rotation;

D O I：

10.1007/s00024-004-0490-4

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Ring Laser gyroscopes exploit the Sagnac effect and measure rotations absolute. They do not require an external reference frame and therefore provide an independent method to monitor Earth rotation. Large-scale versions of these gyroscopes promise to eventually provide a similar high resolution for the measurement of the variations in the Earth rotation rate as the established methods based on VLBI and GNSS. This would open the door to a continuous monitoring of LOD (Length of Day) and polar motion, which is not yet available today. Another advantage is the access to the sub-daily frequency regime of Earth rotation. The ring laser "G" (Grossring), located at the Geodetic Observatory Wettzell (Germany) is the most advanced realization of such a large gyroscope. This paper outlines the current sensor design and properties.

引用

页码：1485 / 1498

页数：14

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