物探与化探2016，Vol.40Issue(4)：838-842,5.DOI:10.11720/wtyht.2016.4.32
相关性分析在GT航空重力仪零漂改正中的应用
The correlation analytical method and its application to GT aerogravimeter drift correction
摘要
Abstract
In airborne gravimeter and ground gravimeter measurement unit,there often occur drift phenomena.If this drift is regarded as a linear relationship,the first and last data are used to do drift correction process.Nevertheless,the airborne gravimeter structure is com⁃plex,and the sensor drift is caused by many factors,with the most critical factor being the environment temperature change disturbance. It is impossible for us to avoid airborne gravity dramatic changes in the temperature difference of flight measurement between summer and winter.The authors used the airborne gravimeter static data as an example.First,the data need gravity tide correction and drift cor⁃rection by using a least squares method.Secondly,correlation analysis is used to analyze the static data and instrument thermostatic tem⁃perature to obtain a strong correlation characteristics.Finally,linear regression equation is set up to calculate the static data and,as a re⁃sult,the gravity of the final corrected precision is greatly improved.This correlation analysis method has practical significance for the in⁃depth understanding of sensor drift correction methods and pre⁃study of dynamic measurement data in the drift correction.关键词
航空重力仪/固体潮改正/零漂改正/最小二乘法/相关性分析Key words
airborne gravimeter/gravity tide correction/drift correction/least squares method/correlation analysis分类
天文与地球科学引用本文复制引用
屈进红,郭素然,周锡华,姜作喜,刘乾坤..相关性分析在GT航空重力仪零漂改正中的应用[J].物探与化探,2016,40(4):838-842,5.基金项目
国家高技术研究发展计划（“863”计划）“新型高精度航空重力勘查系统研制”项目（2013AA063902）；中国地质调查局地质调查“航空重力测量技术规范”项目 （）
