Study on a New Method of Rapidly Acquiring PWV without GPS Station

The Precision of PWV inversed using GPS data already achieved 1-2 mm, which may be used as an examination on precision of the PWV acquired by other methods. Observes the stand regarding the local area without GPS observing station. The square curve fitting model of water vapor pressure and PWV founded in this article can be used to rapidly gain the PWV by the data of water vapor pressure the local area without GPS observing station, which scope of application has been decided. Finally, the method of rapidly acquiring PWV has been confirmed to be reliable through the example. Not only did provide the new data sources for fastly gaining weather forecast accurately on the local region, but also did provide the basis for the decision of density on networks on GPS meteorology monitoring.