摘要
根据调和分析法、最小二乘法,建立利用扰动位数据解算地球重力场的实用数学模型。结果表明,采用不同数据量和不同采样率的观测数据对重力场模型解算结果有一定影响,不同分辨率的观测数据恢复重力场模型的精度差异较大,调和分析法精度优于最小二乘法。
A practical mathematic model was established based on the least squares method and spherical har- monic analysis method for solving the EGM from disturbing potential data. The results show that there are some in- fluences on the EGM results when the observation data are in different data quantity and sampling rate. The preci- sions of the EGMs recovered with different resolutions are different between each others. The result recovered with the spherical harmonic analysis method is better than that with the least squares method.
出处
《大地测量与地球动力学》
CSCD
北大核心
2014年第6期66-71,共6页
Journal of Geodesy and Geodynamics
基金
国家自然科学基金项目(41304022
41174026
41104047)
国家973计划项目(61322201
2013CB733303)
地球空间环境与大地测量教育部重点实验室开放基金项目(13-01-08)
高分专项青年创新基金资助(GFZX04060103-5-12)
