张盼盼,张冰蓉,张朝中,马艳鸽

• 1:河南工程学院土木工程学院
• 2:中国科学院精密测量科学与技术创新研究院精密大地测量与定位全国重点实验室

摘要(Abstract)：

针对现有地球重力场模型分辨率不足的问题，采用加权谱组合方法，通过在过渡区内对地形位模型与EIGEN＿6C4模型的球谐系数进行加权联合，实现重力场信号的平滑过渡，最终构建了高分辨率组合地球重力场模型EIGEN＿dV＿ELL＿5480、EIGEN＿ROLI＿3660与EIGEN＿EHFM＿7200。频谱分析表明，组合模型在高阶部分具有更优的信号能量谱，其中EIGEN＿EHFM＿7200因阶次最高，能表征更精细的重力场信号。基于“1厘米大地水准面实验”科罗拉多山区GNSS/水准、垂线偏差及重力数据的验证结果显示，所有组合模型在高程异常、垂线偏差和重力异常计算精度上均优于EIGEN-6C4模型，其中，EIGEN＿EHFM＿7200精度最优，其高程异常计算精度提升6.9%,垂线偏差子午与卯酉分量计算精度分别提升32.1%和38.9%,重力异常计算精度提升39.7%。研究表明，引入地形重力信号可有效补偿高阶模型的截断误差，为构建高精度、高分辨率地球重力场模型提供了可靠方法与技术支撑。

关键词(KeyWords)： 重力场建模;EIGEN＿6C4;地形位模型;谱组合方法;组合地球重力场模型

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目（42504055）;; 河南省自然科学基金项目（252300423239）;; 河南省重点研发与推广专项（科技攻关）项目（252102240131）;; 河南省高等学校重点科研项目（25A420005）;; 精密大地测量与定位全国重点实验室开放基金资助项目（SKLPG2025-1-3）

作者(Author): 张盼盼,张冰蓉,张朝中,马艳鸽

DOI: 10.16251/j.cnki.1009-2307.2026.11.006

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