BIFROST: Noise properties of GPS time series

摘要: The BIFROST project uses GPS to observe the intra-continental deformation of Fennoscandia caused predominantly by Glacial Isostatic Adjustment (GIA). noise in position time series has been proven correlated, so we investigate a fractal model order obtain parameter that can gauge our network stations true velocity uncertainties and utilize an empirical orthogonal function (EOF) remove inherent common mode. We employ Kaiser window reduce power spectrum variance retain independent estimates based on window’s main lobe width ratio compared boxcar. As spectra lack Gaussian distribution properties, devise transform normalizes subsequently iterate fractional law model.