5Jin S, Wang J. Impacts of Stochastic Modeling on GPS-Derived ZTD Estimations [ C ] //ION GNSS, 2004.
6Ibrahim H E,El-Rabbany A. A Regional Stochastic Mod-el for NOAA-Based Residual Tropospheric Delay [C]//Proceedings of the 2008 National Technical Meeting ofThe Institute of Navigation. San Diego, CA, January2008:877-883.
7Rothacher M. Estimation of station heights with GPS[C J //Drewes H,Dodson A,Fortes L, Sanchez L,San-doval P ( eds ) . Vertical reference systems. InternationalAssociation of Geodesy Symposia. Springer, 2002 : 124 :81-90.
8Ahn YW,Kim D,Dare P. Estimation of TroposphereDecorrelation Using the Combined Zenith-dependent Pa-rameter[C]//ION GNSS, 2008:261-270.
9Grazia Pietrantonio. The analysis of GPS permanent net-work solutions : main features and the impact of temporalcorrelations[ D]. Politecnico of Milan, 2002:26-31.
