区域CORS网络增强PPP天顶对流层延迟内插建模

张小红, 朱锋, 李盼, 翟广

张小红, 朱锋, 李盼, 翟广. 区域CORS网络增强PPP天顶对流层延迟内插建模[J]. 武汉大学学报 ( 信息科学版), 2013, 38(6): 679-683.
引用本文: 张小红, 朱锋, 李盼, 翟广. 区域CORS网络增强PPP天顶对流层延迟内插建模[J]. 武汉大学学报 ( 信息科学版), 2013, 38(6): 679-683.
ZHANG Xiaohong, ZHU Feng, LI Pan, ZHAI Guang. Zenith Troposphere Delay Interpolation Model for Regional CORS Network Augmented PPP[J]. Geomatics and Information Science of Wuhan University, 2013, 38(6): 679-683.
Citation: ZHANG Xiaohong, ZHU Feng, LI Pan, ZHAI Guang. Zenith Troposphere Delay Interpolation Model for Regional CORS Network Augmented PPP[J]. Geomatics and Information Science of Wuhan University, 2013, 38(6): 679-683.

区域CORS网络增强PPP天顶对流层延迟内插建模

基金项目: 国家自然科学基金资助项目(41074024); 中央高校基本科研业务费专项资金资助项目(2012214020207)
详细信息
    作者简介:

    张小红,教授,博士生导师。现主要从事GNSS精密定位及GNSS地学应用等方面的教学和科研工作。

  • 中图分类号: P228.42

Zenith Troposphere Delay Interpolation Model for Regional CORS Network Augmented PPP

Funds: 国家自然科学基金资助项目(41074024); 中央高校基本科研业务费专项资金资助项目(2012214020207)
  • 摘要: 研究了利用区域CORS网基站上解算的高精度ZPD内插流动站ZPD的空间回归模型的适用性和内插效果,证明了H1QM3模型与MLCM模型等价。在此基础上,提出利用高差约束改善内插精度的空间回归模型。实验表明,H1QX1模型和H1QM3模型稳定,在平缓区域能获得10mm以内的插值精度,在起伏地区可获得20mm以内的插值精度;使用高差约束后,高程变化剧烈地区ZPD的内插精度可改善60%;内插参考站数量为9或10时效果最佳。
    Abstract: Taking a priori precise ZPD derived from CORS network to augment PPP can reduce the number of unknown parameters,accelerate its ambiguity resolution in PPP and shorten the convergence time.We investigate the applicability and interpolation effect of spatial regression model in which precise ZPD derived from regional CORS network are used to interpolate ZPD for user site.We also demonstrate that H1QM3 model and MLCM model are equivalent,and propose the height constraint strategy to improve interpolation precision.It is shown that the H1QX1 model and H1QM3 model are superior to other models,interpolation precision is 10 mm in the flat region and 20mm in the undulated region.With height constraint,the precision of intepolated ZPD can be improved by 60% in the undulated region.The optimal number of reference stations for intepolation is 9 or 10.
  • [1] 张小红何锡扬,郭博峰,徐运,. 基于GPS非差观测值估计大气可降水量[J]. 武汉大学学报(信息科学版). 2010(07)[2] 叶世榕张双成,刘经南,. 精密单点定位方法估计对流层延迟精度分析[J]. 武汉大学学报(信息科学版). 2008(08)[3] 熊永良黄丁发,丁晓利,殷海涛,. 基于多个GPS基准站的对流层延迟改正模型研究[J]. 工程勘察. 2005(05)[4] M. GeG. Gendt,M. Rothacher,C. Shi,J. Liu,. Resolution of GPS carrier-phase ambiguities in Precise Point Positioning (PPP) with daily observations[J] 2008,Journal of Geodesy(7):389~399
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出版历程
  • 收稿日期:  2013-01-27
  • 修回日期:  2013-01-27
  • 发布日期:  2013-06-04

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