Abstract

Analysis of the stability of two precision instruments in a place where the environmental impact parameters are known is an urgent problem in geophysical metrology. Knowing the spectrum of disturbing interference, it is possible to evaluate the synchronism and adequacy of temporal changes of highly sensitive sensors installed next to each other. In this study, we analyzed signals recorded by two precision tiltmeters installed on the same pedestal in the basement of the Schmidt Institute of Physics of the Earth, Russian Academy of Sciences. Statistical analysis of the obtained time series made it possible to identify a wide range of tilt fluctuations, including the annual (seasonal) temperature wave. At the same time, the stability of the level of detected disturbances and, in particular, the seasonal variation makes it possible to use them as a natural “calibrator” in the records of parallel instruments and to assess synchronism in the functioning of parallel tiltmeters. The results make it possible to use the created observation system as a test system in assessing the adequacy and metrological stability in recording tilts in monitoring mode for any types of tiltmeters that can be placed in parallel with the installed (reference) devices.

中文翻译：

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使用两个相同基座的仪器进行倾斜配准的长期稳定性分析

摘要

在已知环境影响参数的地方分析两种精密仪器的稳定性是地球物理计量学中的紧迫问题。了解了干扰的频谱后，就可以评估彼此相邻安装的高度敏感的传感器的时间变化的同步性和适当性。在这项研究中，我们分析了由安装在俄罗斯科学院施密特地球物理研究所地下室同一基座上的两个精密倾斜仪记录的信号。对获得的时间序列的统计分析使得有可能识别各种倾斜波动，包括​​年度（季节性）温度波。同时，检测到的干扰水平的稳定性，尤其是 季节性变化使得可以将它们用作并行仪器记录中的自然“校准器”，并可以评估并行倾斜仪在功能上的同步性。结果使得可以将创建的观测系统用作测试系统，以评估在监视模式下可以与已安装（参考）设备平行放置的任何类型的倾斜仪在记录倾斜时的充分性和计量稳定性。