Document History for Document ID 395068
MPI für Gravitationsphysik / Laser Interferometry & Gravitational Wave Astronomy |
|Spectrum and spectral density estimation by the Discrete Fourier transform (DFT), including a comprehensive list of window functions and some new at-top windows|
|Authors:||Heinzel, Gerhard; Rüdiger, Albrecht; Schilling, Roland|
|Date of Publication (YYYY-MM-DD):||2002|
|Review Status:||not specified|
|Abstract / Description:||This report tries to give a practical overview about the estimation of power spectra/power spectral densities using the DFT/FFT.
One point that is emphasized is the relationship between estimates of power spectra and power spectral densities which is given by the effective noise bandwidth (ENBW).
Included is a detailed list of common and useful window functions, among them the often neglected flat-top windows.
Special highlights are a procedure to test new programs, a table of comprehensive graphs for each window and the introduction of a whole family of new flat-top windows that feature sidelobe suppression levels of up to -248 dB, as compared with -90 dB of the best flat-top windows available until now.
|Communicated by:||Karsten Danzmann|
|Affiliations:||MPI für Gravitationsphysik/Laser Interferometry & Gravitational Wave Astronomy |
MPI für Gravitationsphysik/Teilinstitut Hannover
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