航空重力矢量测量数据的外符合精度评估  

External coincidence precision evaluation of airborne vector gravimetry data

作　　者：刘晓刚[1,2] 孙中苗 王云鹏[1,2] 管斌 LIU Xiaogang;SUN Zhongmiao;WANG Yunpeng;GUAN Bin(Xi'an Research Institute of Surveying and Mapping,Xi'an 710054,China;State Key Laboratory of Geo-Information Engineering,Xi'an 710054,China)

机构地区：[1]西安测绘研究所,陕西西安710054 [2]地理信息工程国家重点实验室,陕西西安710054

出　　处：《华中科技大学学报（自然科学版）》2022年第9期70-75,共6页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(42174001,41774018);地理信息工程国家重点实验室开放研究基金资助项目(SKLGIE2021-ZZ-4)。

摘　　要：推导了斯托克斯函数非奇异的严密直接赋值模型,在此基础上,采用某物理大地测量试验区的实测地面重力数据,实现了对我国首套航空重力矢量测量系统的外符合精度评估.实验结果表明:新推导模型的积分核函数离散化误差明显小于经典赋值模型,利用该模型评估的航空重力矢量测量数据的外符合精度,水平分量优于8.5 mGal,垂直分量优于3 mGal.The rigorous and direct assignment model of the Stokes function with non-singularity was derived,based on which the external coincidence precision of the first airborne vector gravimetry system in China was evaluated using the ground gravimetry data from a physical geodesy testing area.The experimental results show that the discretization error of the integral kernel function of the new derived model is obviously smaller than that of the classical one.The evaluated external coincidence precision of the horizontal components of airborne vector gravimetry data is better than 8.5 mGal,and that of the vertical component is better than 3 mGal.

关 键 词：航空重力矢量测量 泊松积分 斯托克斯积分 非奇异 重力异常 边值问题 

分 类 号：P228[天文地球—大地测量学与测量工程]