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《Science of Surveying and Mapping》 2014-01
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Realization and analysis of real-time precise point positioning based on SSR broadcast ephemeris corrections

LIU Zhi-qiang;WANG Jie-xian;College of Surveying and Geo-infomatics,Tongji University;School of Earth Sciences and Engineering,Hohai University;  
The acquisition approach of real-time precise satellite orbit and clock products based on State Space Representation(SSR)corrections to broadcast ephemeris was analyzed in the paper.The generated real-time satellite orbit and clock products were further evaluated.Based on the Real-time Precise Point Positioning(RTPPP)model with broadcast ephemeris corrections,real-time static and kinematic PPP were realized using real-time SSR corrections through NTRI Pstreams disseminated by IGS analysis centers first,and then the accuracies of real-time static and kinematic PPP were also evaluated.Experimental results showed that the RMS of differences between real-time products and IGS final products could be about 4cm~7cm for satellite orbits and better than 0.3ns for satellite clocks.The accuracy of static RTPPP could reach 2cm level in the horizontal component and 4cm level in the up component when the observation session length is more than 6hours.The accuracy of 24-hour daily solution of static RTPPP could be better than 2cm in the horizontal and vertical components.The accuracy of kinematic RTPPP could reach centimeter level.Its convergence time to sub-decimeter could be almost the same as that taken by post-processing PPP with ambiguity unfixed.
【Fund】: 国家自然科学基金(40974018 41174023)
【CateGory Index】: P228.4
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【Citations】
Chinese Journal Full-text Database 3 Hits
1 LI Hao-Jun~1,WANG Jie-Xian~(1,2),CHEN Jun-Ping~3,HU Cong-Wei~(1,2),WANG Hu~1 1 Department of Surveying and Geo-informatics Engineering,Tongji University,Shanghai 200092,China 2 Key Laboratory of Modern Engineering Surveying,State Bureau of Surveying and Mapping,Shanghai 200092,China 3 Deutsches GeoForschungsZentrum-GFZ,14473,Potsdam, Germany;The realization and analysis of GNSS network based real-time precise point positioning[J];Chinese Journal of Geophysics;2010-06
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【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 WANG Yixin1 ZOU Xuan2(1 The First Surveying and Mapping Institute of Hunan Province,49 Yan'an Road,Hengyang 421001,China;2 School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road,Wuhan 430079,China);PRECISION ANALYZE FOR GPS STATIC PRECISE POINT POSITIONING[J];Journal of Geomatics;2008-02
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