Modeling multipath effect with a noise assisted Empirical Mode Decomposition
Xue Zhi-hong, Rong Zhou, Guangyun Li, Yun‐Yan Xu · Cehui kexue · 2013
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.