Kolmogorov-Smirnov like test for time-frequency Fourier spectrogram analysis in LISA Pathfinder
- Journal Article
Rights / licenseIn Copyright - Non-Commercial Use Permitted
A statistical procedure for the analysis of time-frequency noise maps is presented and applied to LISA Pathfinder mission synthetic data. The procedure is based on the Kolmogorov-Smirnov like test that is applied to the analysis of time-frequency noise maps produced with the spectrogram technique. The influence of the finite size windowing on the statistic of the test is calculated with a Monte Carlo simulation for 4 different windows type. Such calculation demonstrate that the test statistic is modified by the correlations introduced in the spectrum by the finite size of the window and by the correlations between different time bins originated by overlapping between windowed segments. The application of the test procedure to LISA Pathfinder data demonstrates the test capability of detecting non-stationary features in a noise time series that is simulating low frequency non-stationary noise in the system. Show more
Journal / seriesExperimental Astronomy
Pages / Article No.
SubjectKolmogorov-Smirnov test; Spectrogram; Noise analysis; Time-frequency map; LISA Pathfinder; Gravitational waves; eLISA; LISA
Organisational unit03476 - Giardini, Domenico / Giardini, Domenico
NotesIt was possible to publish this article open access thanks to a Swiss National Licence with the publisher.
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