The Large Ring Laser G for Continuous Earth Rotation Monitoring

被引：64
|
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
收藏
页码：1485 / 1498
页数：14
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