Abstract:The sparrow search algorithm(SSA) is used to optimize the variational mode decomposition(VMD), then combining wavelet decomposition(WD), we propose a GNSS coordinate time series noise reduction method(IVMD-WD). This article conducts experiments using simulated signals and measured data from 10 reference stations.The results show that compared with empirical mode decomposition(EMD), ensemble empirical mode decomposition(EEMD) and WD, the IVMD-WD method has the best noise reduction effect, it can more effectively eliminate noise in the GNSS coordinate time series.
YANG Houming,LU Tieding,SUN Xiwen et al. GNSS Coordinate Time Series Denoising Method Combining SSA-VMD and Wavelet Decomposition[J]. jgg, 2024, 44(4): 360-365.