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本文从重力仪弹性系统的平衡方程出发,依据两台GS—15型重力仪在乌鲁木齐多年的工作实践,分别讨论了影响重力观测的几种主要因素。 1、通过对两台仪器多次在基线场标定结果的分析认为:重力仪的常数随标定时使用的基线场不同而存在系统差;检修仪器的心脏部分会引起常数的较大变化;仪器常数可能随时间有一长期变化。在排除了各种干扰后,应根据调和分析的结果与已知的潮汐因子值或经典值进行对比来判断常数正确与否。
Based on the balance equation of gravimeter elastic system and based on the years of practice of two GS-15 gravimeter in Urumqi, this paper discusses several main factors affecting gravity observation respectively. 1, Through the analysis of calibration results of two instruments in baseline field many times, it is concluded that the constant of gravity meter varies with the baseline field used in calibration, and the heart part of maintenance instrument will cause large change of constant. The instrument constant There may be a long-term change over time. After excluding all kinds of interference, the correctness should be judged according to the results of harmonic analysis and known tide factor or classical value.