PANDA软件在高频数据PPP动态定位中的应用研究
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摘要
结合具体算例分析了PANDA的定轨、钟差计算精度,并利用PANDA计算的轨道、钟差产品,对汶川地震期间的高频GPS观测数据实施动态精密单点定位。结果表明,PANDA应用于高频动态精密单点定位中具有实时性强,定位精度高等优势。
The precision of orbit determination and clock error computation of PANDA(Position And Navigation Data Analysis) is verified through experiments.The high frequency GPS observation data during Wenchuan earthquake is processed by kinematic precise point positioning with the PANDA products of orbit and clock error.The results indicate that the advantages of using PANDA for high frequency kinematic precise point positioning are good in real time and of high accuracy.
The precision of orbit determination and clock error computation of PANDA(Position And Navigation Data Analysis) is verified through experiments.The high frequency GPS observation data during Wenchuan earthquake is processed by kinematic precise point positioning with the PANDA products of orbit and clock error.The results indicate that the advantages of using PANDA for high frequency kinematic precise point positioning are good in real time and of high accuracy.
引文
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2方荣新,施闯,辜声峰.基于PPP动态定位技术的同震地表形变分析[J].武汉大学学报(信息科学版),2009,34(11):1340-1343.(Fang Rongxin,Shi Chuang and Gu Shengfeng.Precise point positioning with high-rate GPS data applied to seismic displacements analysis[J].Geomatics and Information Science of Wuhan University,2009,34(11):1340-1343)
3方荣新.高采样率GPS数据非差精密处理方法及其在地震学中的应用研究[D].武汉大学,2010.(Fang Rongxin.High-rate GPS data non-difference precise processing and itsapplication to seismology[D].Wuhan University,2010)
4IGS Products[DB/OL].http://igscb.jpl.nasa.gov/compo-nents/prods.html.
5冯义楷,等.GPS精密卫星钟差的计算模型研究[J].大地测量与地球动力学,2010,(2):109-112.(Feng Yikai,et al.Study on calculation mode of precise GPS satellite clock error[J].Journal of Geodesy and Geodynamics,2010,(2):109-112)
6M Ge,et al.Resolution of GPS carrier-phase ambiguities in Precise Point Positioning(PPP)with daily observations[J].J Geod.,2008,82:389-399.
7赵齐乐,等.用PANDA对GPS和CHAMP卫星精密定轨[J].大地测量与地球动力学,2005,(2):113-117.(Zhao Qile,et al.Precise orbit determination of GPS and CHAMP satellites with PANDA software[J].Journal of Geodesy and Geodynamics,2005,(2):113-117)
8Blewitt G.An automatic editing algorithm for GPS data[J].Geophysical Research Letters,1990,17(3):199-202.
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