绝对观测时段对地磁基线值观测质量影响的分析研究

Analysis and Research on Effects of Absolute Measurement Time Period on Observation Quality of Geomagnetic Baseline Values

基线值的观测质量是综合评价地磁台观测资料质量的一个重要指标。根据肇庆地磁台2007年9月18日进行的连续46组绝对观测数据,分析研究了相应时段基线值的稳定性及精度。研究结果表明,在磁静日的不同时段进行的绝对观测对基线值的稳定性影响较小,基线值观测精度较高。

The observation quality of the baseline value is an important indicator to synthetically evaluate the observation data quality of geomagnetic observatories. Based on 46 groups of continuous absolute measurement data carried out at Zhaoqing geomagnetic observatory on September 18, 2007, the stability and precision of the baseline value during this period are analyzed. The results show that the absolute measurements of different time periods have a small influence on the stability of the baseline value on the magnetic quiet day, and tile baseline value observation has a rather high precision. This research is of certain significance to the absolute measurements of geomagnetic observatories.