Search Publications

Effect of data gaps: comparison of different spectral analysis methods

Mursula, Kalevi; Echim, Marius; Munteanu, Costel +1 more

In this paper we investigate quantitatively the effect of data gaps for four methods of estimating the amplitude spectrum of a time series: fast Fourier transform (FFT), discrete Fourier transform (DFT), Z transform (ZTR) and the Lomb-Scargle algorithm (LST). We devise two tests: the single-large-gap test, which can probe the effect of a single da…