文章基本信息

标题：Study on the Stability and Accuracy of Baseline Values Measured During the Calibrating Time Intervals
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作者：Suqin Zhang ; Dongmei Yang
期刊名称：Data Science Journal
电子版ISSN：1683-1470
出版年度：2015
卷号：10
DOI：10.2481/dsj.IAGA-04
语种：English
出版社：Ubiquity Press
摘要：In order to investigate quantitatively the accuracy of geomagnetic daily variation recorded by the FGE magnetometer, we analyzed the stability and precision of some groups' baseline values continuously recorded one day at seven observatories in 2009. The results show that the standard deviation and variable amplitude of the baseline values are small in D, H, and Z components, the standard deviation values are δD≤0.03', δH≤0.3nT, δZ≤0.3nT respectively, and the variable amplitude values are ΔD≤|0.05'|, ΔH≤|0.5'|, ΔZ≤|0.5'| respectively. Then we selected the baseline values continuously recorded one day at CDP and KSH observatories in 2009 and 2010 and analyzed the influence of absolute measurement intervals on the stability of the baselines.
关键词：Absolute measurement; Baseline values; Stability and precision; Calibration