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Earth, Planets and Space

, Volume 60, Issue 5, pp e1–e4

First Online: 03 May 2008Received: 14 February 2008Revised: 24 March 2008Accepted: 28 March 2008


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.

Key wordsGPS troposphere ray-tracing PPP  Download to read the full article text

Autor: Thomas Hobiger - Ryuichi Ichikawa - Tomoji Takasu - Yasuhiro Koyama - Tetsuro Kondo

Fuente: https://link.springer.com/

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