We simultaneously calculate atmospheric parameters (zenith wet delay and a gradient vector) and positioning errors estimated from tropospheric slant delays using ray tracing technique through a one epoch data set of the mesoscale non-hydrostatic numerical model. In this numerical calculation both isotropic and anistropic mapping functions are evaluated. We find that the positioning errors are not reduced by an anisotropic mapping function, with the exception of the north-south component. Elevation weighting is more important than mapping function type for reducing horizontal errors with the present specific data set. Large horizontal and vertical positioning errors associated with topography and mountain lee wave effect are indicated.
Conference Committee Involvement (1)
Remote Sensing Applications of the Global Positioning System
8 November 2004 | Honolulu, Hawai'i, United States
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