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《Science of Surveying and Mapping》 2011-03
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Grid-based VTEC model of GPS/BD-2 combined system

LIU Jun①,CHAI Hong-zhou①②,FANLong①,WANG Hai-dong①③(①Institute of Surveying and Mapping,Information Engineer University,Zhengzhou 450052;②Naval Institute of Hydrographic Surveying and Charting,Tianjin 300061,China;③Navy Press,Tianjin 300450,China)  
Considering the delay of satellites' sending frequencies,the authors simulated the ionospheric VTEC of BD-2 with GPS data of the Crustal Observation Network of China(COMNOC),and established the VTEC grid model of GPS/BD-2 combined system.The experiment results showed the validity of this model in short-term forecast of ionospheric delay.
【CateGory Index】: P228.4
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