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《Geomatics and Information Science of Wuhan University》 2006-01
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DOP for GPS,Galileo and Combination Navigation System

WANG Zemin~(1) MENG Yang~(1) WU Yue~(1) LIANG Shujun~2(1 School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road,Wuhan 430079,China)(2 General Research Institute of Metallurgy and Investigation,13 Dongfeng Road,Baoding 071000,China)  
This paper uses the Galileo orbit parameter for simulating the Galileo satellite position and DOP,compares the visible satellite number and DOP between GPS and Galileo system,at same time and same place.The result indicates that Galileo constellation is better than GPS.And simulates GPS and Galileo combined constellation,more visible satellite brings diminished DOP, in contrast with single system,so that improves the position precision,and also broaden the scope of position due to limited elevation.
【Fund】: 国家自然科学基金资助项目(49904001)
【CateGory Index】: P228.4
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