利用重复测线校正海空重力仪格值及试验验证  

Test and correction of scale values for air-seagravimeters using repeated survey lines

作　　者：黄谟涛[1] 刘敏[2] 邓凯亮[1,3] 欧阳永忠[1] 陆秀平[1] 翟国君[1] 吴太旗[1] 陈欣[1] HUANG MoTao;LIU Min;DENG KaiLiang;OUYANG YongZhong;LU XiuPing;ZHAI GuoJun;WU TaiQi;CHEN Xin(Naval Institute of Hydrographic Surveying and Charting,Tianjin 300061,China;Institute of Geographic Space Information,Information and Engineering University,Zhengzhou 450001,China;College of Mechatronics Engineering and Automation,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]海军海洋测绘研究所,天津300061 [2]信息工程大学地理空间信息学院,郑州450001 [3]国防科技大学机电工程与自动化学院,长沙410073

出　　处：《地球物理学报》2018年第8期3160-3169,共10页Chinese Journal of Geophysics

基　　金：国家自然科学基金(41474012;41374018);国家重点研发计划(2016YFB0501704;2016YFC0303007);国家重大科学仪器设备开发专项(2011YQ12004504);国家重点基础研究发展计划(973计划)(613219)共同资助

摘　　要：通过分析海空重力测量系统误差的形成机理,我们发现海空重力仪格值标定误差是引起系统性测量偏差的主要因素之一.本文简要介绍了重力仪格值的标定方法,分析论证了格值标定的精度要求,提出了利用东西正反向重复测线检测校正海空重力仪格值的计算模型和补偿方法,分析讨论了该方法的校正精度及其适用条件,利用航空重力实际观测网数据对该方法的合理性和有效性进行了数值验证,证明该方法对消除海空重力测量系统性偏差具有显著作用.A detail analysis on the mechanism of systematic errors reveals that the calibration error of scale values for air-sea gravimeters is one of major factors causing systematic deviation of measurements.This paper presents briefly the calibration methods of gravimeter scale values.The accuracy requirement for calibrating gravimeter scale values is analyzed.Then computation models and a compensation method for correcting gravimeter scale values using repeated forwardreverse and east-west directed survey lines are proposed.The correction accuracy and applicability of the new method are analyzed and discussed.Finally,a numerical test using a real airborne gravity survey data set is made to prove the reasonableness and validity of the suggested method.It is shown that this new method can play an important role in eliminating the systematic deviation of measurements in air-sea gravity surveys.

关 键 词：海空重力仪 格值 检测与校正 重复测线 系统偏差 

分 类 号：P223[天文地球—大地测量学与测量工程]