CG6型相对重力仪比例因子两种标定结果比对分析  

Comparison and Analysis of Two Different Calibration Results of Scale Factor of CG6 Relative Gravimeter

作　　者：赵丕 何志堂 罗铖 康胜军 史志刚 ZHAO Pi;HE Zhitang;LUO Cheng;KANG Shengjun;SHI Zhigang(The First Geodetic Surveying Brigade of Ministry of Natural Resources,Xi'an 710054,China)

机构地区：[1]自然资源部第一大地测量队,陕西西安710054

出　　处：《地球科学进展》2021年第5期528-535,共8页Advances in Earth Science

基　　金：国家自然科学基金面上项目“局部地质水文特征对地表重力观测影响研究”(编号:41774093);国家自然科学基金青年科学基金项目“红河断裂带北、中段及邻区现今地壳深部变形的重力学研究”(编号:41604014)资助。

摘　　要：比例因子一直是影响相对重力测量精度的重要因素之一。根据不同方法标定相对重力仪比例因子,对相对重力测量数据进行计算,其结果精度存在一定的不同。利用CG6型相对重力仪比例因子的两种标定结果(重力长基线标定值和测区重力基准点之间标定值),对2019年和2020年中国大陆构造环境监测网络西藏测区相对重力联测数据进行处理,并对结果精度进行比对分析。结果表明,采用在测区重力基准点间标定比例因子计算的成果精度,优于在重力长基线标定比例因子计算的成果精度。Scale factor is always one of the most important factors which affect the accuracy of relative gravity measurement. The scale factors from different calibration methods are used to calculate the same relative gravity measurement data and therefore the accuracy of the results are different. Based on the different scale factors of CG6 relative gravimeter(Calibration factor calculated by the gravity long baseline or the gravity datum points in the measurement area),the gravity measurement data of Tibet area in Crustal Movement Observation Network of China in 2019 and 2020 were calculated,and then the calculated results is compared and analyzed.The results show that the accuracy calculated by calibrating the scale factor between the gravity datum points in the measurement area is better than that calculated by calibrating the scale factor on the gravity long baseline.

关 键 词：相对重力测量 比例因子 重力段差 精度 

分 类 号：P223[天文地球—大地测量学与测量工程]