CG-5重力仪的漂移特征

Drift Characteristics of CG-5 Gravimeter

基于实验数据,从静态漂移和动态漂移两个方面对CG-5重力仪的零漂特性进行系统分析。结果发现,CG-5重力仪的零漂值(静态漂移率和动态漂移率)较高,幅值随时间变化逐渐减小,最终趋于稳定;静态漂移率和动态漂移率总体随空间纬度(重力值读数段)增大而减小,但个体差异较大。

This paper analyses the CG-5gravimeter＇s drift characteristics from dynamic and static drift rate bases on large experimental data.Our research shows that the CG-5gravity meter＇s zero drift rate is comprehensively high,its variation magnitude becomes smaller as time goes by,but trends to stable eventually;the dynamic and static drift rates show a general trend of decrease as spatial latitude increases（gravity reading section increase）,but with significant individual variations.