论文标题
用G wettzell数据克服$ 10^9 $的$ 10^9 $的$ 10^9 $
Overcoming 1 part in $10^9$ of Earth angular rotation rate measurement with the G Wettzell data
论文作者
论文摘要
如果必须获得$ 10^9 $的精确度中的1部分，则对地面仪器的地球角旋转速率的绝对测量变得具有挑战性。该阈值对于基本物理和地理学对于研究重力部门中的一般相对论和洛伦兹侵犯的影响并提供地球旋转速率的快速变化很重要。 高灵敏度环激光陀螺仪（RLG）目前是在不久的将来实现此任务的唯一有前途的技术，但是到目前为止，它们的精度受到与激光操作相关的系统技术的限制。 在本文中，我们分析了两组不同的观测值，每一个观察长三天。它们是从Geodetic天文台Wettzell的G环激光器中获得的。为了识别和提取激光系统，已开发了用于gingerino环激光器的应用方法。对于可用的数据集，残差大部分是白噪声行为，在整合时间约为$ 10^4 $ 〜s之后，$ 10^9 $中的Allan偏差在$ 10^9 $中下降到1个零件以下。
The absolute measurement of the Earth angular rotation rate with ground-based instruments becomes challenging if the 1 part in $10^9$ of precision has to be obtained. This threshold is important for fundamental physics and for geodesy, to investigate effects of General Relativity and Lorentz violation in the gravity sector and to provide the fast variation of the Earth rotation rate. High sensitivity Ring Laser Gyroscopes (RLG) are currently the only promising technique to achieve this task in the near future, but their precision has been so far limited by systematics related to the laser operation. In this paper we analyze two different sets of observations, each of them three days long. They were obtained from the G ring laser at the Geodetic Observatory Wettzell. The applied method has been developed for the GINGERINO ring laser in order to identify and extract the laser systematics. For the available data sets the residuals show mostly white noise behavior and the Allan deviation drops below 1 part in $10^9$ after an integration time of about $10^4$~s.
