CG-6型重力仪零漂特性研究  

Study on Zero Drift Characteristics of CG-6 Gravimeter

作　　者：郝洪涛[1] 刘少明[1] 韦进[1] 胡敏章[1] HAO Hongtao;LIU Shaoming;WEI Jin;HU Minzhang(Key Laboratory of Earthquake Geodesy,Institute of Seismology,CEA,40 Hongshance Road,Wuhan 430071,China)

机构地区：[1]中国地震局地震研究所地震大地测量重点实验室

出　　处：《大地测量与地球动力学》2019年第10期1086-1090,共5页Journal of Geodesy and Geodynamics

基　　金：中国地震局地震研究所基本科研业务费专项;中国地震局地壳应力研究所基本科研业务费专项(IS201726162,IS2018126181);中国地震局地震行业科研专项(201508009);国家自然科学基金(41304059,41204058)~~

摘　　要：对中国地震局地震研究所最新引进的4台CG-6型相对重力仪的零漂特性进行测试研究,结果表明,4台重力仪的静态零漂率、混合零漂率和动态零漂率均小于8μGal/h,满足厂家给出的技术指标。在较长观测时间内,各台仪器的零漂均存在不同程度的非线性特征,因此在进行较长时间的野外观测以及后续数据处理中,不宜将零漂率作为常数进行解算和零漂改正。In this paper,the zero drift characteristics of the newly introduced four CG-6 relative gravimeters are studied.The results show that the static zero drift rate,mixed zero drift rate,and dynamic zero drift rate of the four gravimeters are less than 8 mGal/h,which meets the technical specifications given by the manufacturer.However,in a long period of time,the zero drift of each instrument has different degrees of nonlinear characteristics,indicating that the zero-drift rate is unstable.Therefore,in long-term field observation and subsequent data processing,it is not appropriate to use the zero-drift rate as constants are solved and zero drift corrections are made.

关 键 词：CG-6重力仪 静态零漂 动态零漂 混合零漂 

分 类 号：P244[天文地球—测绘科学与技术]