尹安邦,时春霖,詹银虎,杨宇飞,李新星

• 1:网络空间部队信息工程大学
• 2:61206部队
• 3:信息支援部队工程大学
• 4:北京卫星导航中心

摘要(Abstract)：

针对高精度垂线偏差的获取，天文大地观测方法虽精度高，但观测周期长、观测条件受限，而地球重力场模型计算方法虽效率高，但缺乏系统的精度评估的问题。依托数字天顶仪TZK2-D实测的垂线偏差数据，对典型地球重力场模型EGM2008、SGG-UGM-2、GGMplus以及XGM2019e(2 190阶次)进行了地面点垂线偏差计算精度的评估，并进一步探究了模型解算的子午分量与卯酉分量之间的相关性。结果表明：GGMplus模型计算垂线偏差的精度可达到0.30″～0.38″,相对于另外3种模型提升60%以上；GGMplus的极差较小，相对于另外3个模型计算结果更稳定。垂线偏差两分量之间存在一定强度的负相关。

关键词(KeyWords)： 垂线偏差;地球重力场模型;数字天顶仪

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(42474064);; 河南省优秀青年科学基金项目(242300421151);; 国家自然科学基金区域创新发展联合基金重点项目(U23A2028)

作者(Author): 尹安邦,时春霖,詹银虎,杨宇飞,李新星

DOI: 10.16251/j.cnki.1009-2307.2026.11.002

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