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《Journal of Geodesy and Geodynamics》 2011-03
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ANALYSIS OF PSEUDORANGE MULTIPATH EFFECTS BASED ON PRECISE POINT POSITIONING TECHNOLOGY

Li Wei1,2),Cheng Pengfei2) and Bei Jinzhong2)(1)School of Geodesy and Geomatics,Wuhan University,Wuhan 4300792)Chinese Academic of Surveying and Mapping,Beijing 100830)  
A preliminary study was carried out to analyze the pseudorange multipath effect from reference stations of Continuous Operation Reference System(CORS) in Hebei province from the following four aspects.1)A comparison was made among the pseudoramge multioath effects under different cut-off elevation angles(5°,15° and 25°) and then the relations between the multipath effects and elevation angles are figured out.2)All the reference stations are equipped with the same type of combinations of receiver and antenna,the discrepancy of the multipath can mainly due to the distinct environment of each receivers,taking several typical multipath-affected severely stations as examples,based on the basis of the skyplot of multipath,the effects of azimuth-and elevation-dependent effect of multipath were exactly examined,at meantime,a filed inspection of environment surrounding the stations was held,and the abovementioned factors further was verified.3)The dataset respectively from the strongest and weakest multipath-affected reference stations at the same day was processed,and the influences of multipath on the convergence time and repeatability of PPP solutions further were examined.
【Fund】: 国家自然科学基金(40874012 40974008 41074014);; 中央高校基本科研业务专项
【CateGory Index】: P228.4
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