桂林理工大学学报Issue(4)：728-731,4.DOI:10.3969/j.issn.1674-9057.2014.04.021
基于最小二乘配置法的高程拟合及精度评定方法
Elevation fitting based on LSC algorithm and accuracy evaluation method
摘要
Abstract
The common method to determine Quasi-Geoids is GPS leveling.The fitting method is surface fit-ting,considering only the measurement error,leading to inaccurate fitting result.It is impossible to judge fitting result by inner and outer fitting,as it can only explain a certain extent of the fitting effort to the model.Thus the least square collocation method is used for elevation fitting which takes measurement error and model error into account.By taking the fitting result as a reference,and method of using three dimension diagrams of residual of elevation anomaly,and the inner and outer fitting result is put forward to analyze the results.Then the result with quadratic polynomial and BP neural network is compared.The result shows that LSC method can achieve high fitting precision for large area with height anomaly value changes significantly.It is an efficient approach to assess the fitting result with the three dimensional diagram.关键词
最小二乘配置/三维图/高程拟合/拟合精度Key words
least square collocation/three dimension diagrams/elevation fitting/fitting accuracy分类
天文与地球科学引用本文复制引用
张腾旭,刘立龙,周淼,赫林,黄良珂..基于最小二乘配置法的高程拟合及精度评定方法[J].桂林理工大学学报,2014,(4):728-731,4.基金项目
国家自然科学基金项目（41064001）；广西自然科学基金项目（2012GXNSFAA053183；2012GXNSFGA060001）；广西研究生教育创新计划项目（YCSZ2013077；YCSZ2012083）；广西空间信息与测绘重点实验室项目（桂科能1103108－06）；广西矿冶与环境科学实验中心项目（KH2012ZD004）；广西“八桂学者”岗位专项经费资助项目 （）
