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《Science of Surveying and Mapping》 2013-04
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Modeling multipath effect with a noise assisted Empirical Mode Decomposition

XUE Zhi-hong ①②,ZHOU Rong ③,LI Guang-yun ①,XU Yun-yan ④(①Institute of Surveying and Mapping,Information Engineering University,Zhengzhou 450052,China;②The Academy of Satellite Application,Beijing 100086,China;③Troops 73603,Nanjing 210049,China;④Zhengzhou School for Surverying and Mapping,Zhengzhou 450052,China)  
Empirical Mode Decomposition(EMD) has been proved to be an adaptive data analysis method and be versatile in a broad range of applications.While one of the major drawbacks is the mode mixing for intermittency signals.The reason of mode mixing was expatiated upon and an alternative method named Ensemble EMD was introduced in the paper.Then the validity in ameliorating the difficulty was demonstrated through simulation data.Multipath effect of GPS observable was complex and intermittent,then the EMD and EEMD were used respectively to extract multipath model from the coordinates serial measured by GPS in two sequential days.The results demonstrated the advantage of EEMD.
【Fund】: 中国航天科技集团公司卫星应用研究院开放基金
【CateGory Index】: P228.4
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