中国科学院大学学报2016，Vol.33Issue(4)：528-536,9.DOI:10.7523/j.issn.2095-6134.2016.04.014
基于大地水准面经典定义的地球重力场模型评价
Evaluation of earth gravitational models based on classic geoid definition
摘要
Abstract
We propose an evaluation approach of earth gravitational models (EGMs) based on Gauss-Listing classic geoid definition.The classic geoid is defined as an equigeopotential surface.Using this character,we select a gravity geoid as reference surface,calculate the gravity potentials of different EGMs on the reference surface,and establish an index of gravity potential dispersion to evaluate EGMs.Using this approach we evaluate theoretical compliance abilities of different EGMs and of an EGM applied in different areas in the earth.The results show that the precision of EGM96 is higher than that of OSU91,and EGM2008 and EIGEN-6C4 have similar precisions.The results are consistent with the existing research conclusions.The results further declare that the precision of EGM2008 is slightly higher than that of EIGEN-6C4 in the cm level.关键词
Gauss-Listing大地水准面经典定义/地球重力场模型/重力位离散度/精度评价Key words
Gauss-Listing classic geoid definition/earth gravitational model (EGM)/gravity potential dispersion/accuracy evaluation分类
地球科学引用本文复制引用
丁剑,许厚泽,章传银..基于大地水准面经典定义的地球重力场模型评价[J].中国科学院大学学报,2016,33(4):528-536,9.基金项目
国家自然科学基金(41304009,41374081)和地理空间信息工程国家测绘地理信息局重点实验室2014年度开放研究基金(777142109)资助 （41304009,41374081）
