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基于GRACE卫星数据的高精度全球静态重力场模型
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Journal Article
基于GRACE卫星数据的高精度全球静态重力场模型
2016
Overview
应用GRACE卫星数据反演高精度静态地球重力场是大地测量学界的热点之一。考虑到经典动力学法线性化误差随弧长拉长而迅速增长,本文以GRACE卫星轨道观测值为初值的线性化方法,建立了应用GRACE卫星轨道和星间距离变率反演地球重力场的改进动力学法理论模型。利用2003年1月至2010年12月的GRACE卫星姿态、轨道、星间距离变率和非保守力加速度等观测数据,解算了一个180阶次的无约束全球静态重力场模型Tongji-Dyn01s和一个采用Kaula规则约束的全球重力场模型Tongji-Dyn01k。与国际不同机构最新发布的纯GRACE数据解算的重力场模型（包括AIUB-GRACE03S、GGM05S、ITSG-Grace2014k和Tongji-GRACE01）进行比较,并利用DTU13海洋重力异常和GPS/水准高程异常进行外部检核,结果表明,Tongji-Dyn01s与国际最新模型精度处于同一水平,然而Tongji-Dyn01k模型总体上更加靠近EIGEN6C2重力场模型。
Publisher
同济大学测绘与地理信息学院,上海200092,同济大学空间信息与可持续发展应用中心,上海200092%同济大学测绘与地理信息学院,上海,200092%广东工业大学测绘工程系,广东广州,510006%香港理工大学土地测量及地理资讯学系,香港%大地测量与地球动力学国家重点实验室,湖北武汉,430077,香港理工大学土地测量及地理资讯学系,香港
Subject
