Ray-traced troposphere slant delays for precise point positioning

Details Ray-traced troposphere slant delays for precise point positioning Ray-traced troposphere slant delays for precise point positioning

May 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008ep%26s...60e...1h&link_type=abstract

Earth, Planets and Space, Volume 60, p. e1-e4.

Statistics

Computation

5

Scientific paper

Precise satellite orbits and clock information for global navigation satellite systems (GNSS) allow zero-difference position solutions, also known as precise point positioning (PPP) to be calculated. In recent years numerical weather models (NWM) have undergone an improvement of spatial and temporal resolution. This makes them not only useful for the computation of mapping functions but also allows slant troposphere delays from ray-tracing to be obtained. For this study, such ray-traced troposphere corrections have been applied to code and phase observations of 13 sites from the International GNSS Service (IGS) receiver network, which are located inside the boundaries of the Japanese Meteorological Agency (JMA) meso-scale weather model, covering a period of 4 months. The results from this approach are presented together with a comparison to standard PPP processing results. Moreover the advantages and caveats of the introduction of ray-traced slant delays for precise point positioning are discussed.

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