高精度重复相对重力观测量提取  

Extraction of High-Precision Repeated Relative Gravity Observation Value

作　　者：段虎荣[1] 康明哲 闫全超 吴绍宇 解柳 DUAN Hurong;KANG Mingzhe;YAN Quanchao;WU Shaoyu;XIE Liu(College of Geomatics,Xi’an University of Science and Technology,58 Yanta Road,Xi’an 710054,China)

机构地区：[1]西安科技大学测绘科学与技术学院,西安市710054

出　　处：《大地测量与地球动力学》2020年第10期1088-1091,共4页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(41304013);地理信息工程国家重点实验室开放基金(SKLGIE2017-M-3-3)。

摘　　要：采用RANSAC算法剔除观测数据中的离群值,再使用线性内插法进行补全,利用整体投影计算的思想提取两点间的相对重力值,并对其精度和标准差进行检验。结果表明,动态重力观测的残差最大值为4.641μGal,重复性标准差最大值为4.384μGal,均优于5μGal。该方法可获得较高精度的重力观测数据,为在复杂环境下获取相对重力值提供一种新方法。In this paper,we eliminate outliers in observation data by RANSAC algorithm,and the linear interpolation method is used to complete the data set.The relative gravity value between two points is extracted by overall projection calculation,and its accuracy and standard deviation are tested.The results show that the maximum residual value of dynamic gravity observation is 4.641μGal,and the maximum repeatable standard deviation is 4.384μGal,both less than 5μGal.This method can obtain high-precision gravity observation data,and provides a new method for obtaining relative gravity values in complex environments.

关 键 词：RANSAC 相对重力值 整体投影 精度检定 

分 类 号：P312[天文地球—固体地球物理学]