Zongqiu Xu

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The GNSS derived Zenith Tropospheric Delay (ZTD) plays today a very critical role in meteorological study and weather forecasts, as ZTDs of thousands of GNSS stations are operationally assimilated into numerical weather prediction models. Recently, the Chinese BeiDou Navigation Satellite System (BDS) was officially announced to provide operational services(More)
This paper analyzed various components of integrated positioning LBS mobile terminal based on C8051F340, studied pseudo-range integrated positioning of GPS and GLONASS, deduced the combined observation equations and its solution, then used GPRS technology for transmission. Combining with those methods, we finally realized the integrated positioning LBS(More)
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