gPhone重力仪漂移改正方法研究  

Research on gPhone Gravimeter Drift Correction Method

作　　者：王乐行 刘子维[1,2] 江颖 张晓彤[1,2] 李晖 WANG Lexing;LIU Ziwei;JIANG Ying;ZHANG Xiaotong;LI Hui(Institute of Seismology,CEA,40 Hongshance Road,Wuhan 430071,China;Wuhan Gravitation and Solid Earth Tides,National Observation and Research Station,40 Hongshance Road,Wuhan 430071,China)

机构地区：[1]中国地震局地震研究所,武汉市430071 [2]武汉引力与固体潮国家野外科学观测研究站,武汉市430071

出　　处：《大地测量与地球动力学》2025年第1期104-110,共7页Journal of Geodesy and Geodynamics

基　　金：中国地震局地震研究所和应急管理部国家自然灾害防治研究院基本科研业务费(IS202226326)。

摘　　要：对秭归站gPhone重力仪2017年全年数据进行预处理和各项改正后,利用4种方法进行漂移改正的对比研究,对多项式改正阶次的选取、各方法去漂移的效果评定、BEADS算法是否有效等问题进行计算分析。结果表明,用多项式拟合的方法去除gPhone重力仪数据漂移时,当阶数达到4阶、5阶左右便趋于稳定,对于一般研究推荐采用5阶多项式去漂移即可满足数据处理要求;用滤波法去漂移时需要关注边际效应,EEMD方法可操作性强,相较于小波滤波更具优势;BEADS算法能够实现趋势项拟合从而去除漂移的功能,但能否在各项研究中加以应用还需要进一步分析。该研究成果可为相关弹簧型重力仪漂移改正提供参考。In this paper,after preprocessing and various corrections of the Zigui station gPhone gravimeter data for the whole year of 2017,we use four methods to carry out a comparative study of drift correction including polynomial correction order selection,drift removal effect evaluation of each method,whether the BEADS algorithm is effective and other issues.The research results show that when the polynomial fitting method is used to remove the drift problem of gPhone gravimeter data,it will become stable when the order reaches about fourth and fifth orders.For general research,it is recommended to use fifth-order polynomials to remove drift,which can meet data processing requirements.When filtering to remove drift,we need to pay attention to the marginal effect.The EEMD method is highly operable and has more advantages than wavelet filtering.The BEADS algorithm can realize the function of fitting trend terms to remove drift,but can it be used in various studies?This requires further research.The research results of this article can provide an effective reference for drift correction of related spring-type gravimeters.

关 键 词：gPhone重力仪 漂移改正 多方法对比 

分 类 号：P312[天文地球—固体地球物理学]