Guo Jiming, Zhang Di, Shi Junbo, Zhou Mingduan. Using Ray-Tracing to Analyse the Precision of Three Classical Tropospheric Mapping Functions in China[J]. Geomatics and Information Science of Wuhan University, 2015, 40(2): 182-187.
Citation: Guo Jiming, Zhang Di, Shi Junbo, Zhou Mingduan. Using Ray-Tracing to Analyse the Precision of Three Classical Tropospheric Mapping Functions in China[J]. Geomatics and Information Science of Wuhan University, 2015, 40(2): 182-187.
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Using Ray-Tracing to Analyse the Precision of Three Classical Tropospheric Mapping Functions in China

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  • Radiosonde data from 8 stations in China are analyzed based on ray-tracing technology. Hydrostatic and non-hydrostatic delays for 18 directions，from the zenith to 40 elevation，were computed.The results were compared with 3 mapping functions: NMF, UMF and VMFl，which demonstrate that: ①there is strong relation between the precision of NMF and the latitude of the station;②VMFl is the most precise and stable mapping function, but with certain seasonal variations when applied in WuHan，ChangSha and some other stations;③the precision of UMF falls between that of NMF and VMFl.
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