姜卫平,周伯烨,李昭

• 1:武汉大学卫星导航定位技术研究中心
• 2:武汉大学测绘学院

摘要(Abstract)：

针对目前大气负载效应明显的纬度分布特性未得到重视,大部分GPS坐标时间序列均未加入大气负载修正,导致忽略了中高纬地区测站受大气负载的显著影响这一问题,该文从测站位置纬度分布的角度,着重计算分析由大气负载效应引起的国际GNSS服务测站位移,分析大气负载效应对GPS坐标时间序列的影响,以及因纬度差异导致的国际GNSS服务测站受大气负载效应影响存在的差异。通过计算修正前后GPS坐标时间序列均方根值和加权均方根值,评估对GPS坐标时间序列进行大气负载效应修正的重要性。分析结果表明,大气负载对测站影响的分布与纬度位置有明显关联,中高纬地区其效果显著,而低纬地区受其影响相对较小。在北斗全球坐标框架的建立中,若考虑大气负载效应的影响,精度上将有毫米级的提高。

关键词(KeyWords)： 大气负载效应;纬度差异;坐标时间序列;WRMS分析

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(41374033);; 长江学者奖励计划项目

作者(Author): 姜卫平,周伯烨,李昭

DOI: 10.16251/j.cnki.1009-2307.2016.04.007

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