Printed book · Report
Sampling Problems with Spectral Coherence
Test and Measurements, Wind Energy Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark1
Wind Energy Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark2
Risø National Laboratory for Sustainable Energy, Technical University of Denmark3
IT Service Department, Risø National Laboratory for Sustainable Energy, Technical University of Denmark4
This report deals with the confidence of the spectral coherence derived from a measured time series by a discrete Fourier transform. The estimated coherence will be based on a block averaging procedure, characterized by a certain number of degrees of freedom. A discussion is given of the significance of this number, and how many degrees of freedom are necessary to get a trustworthy sampling of the coherence.
The study is carried out by utilizing the statistical results available for complex Gaussian product sums (Goodman statistics).
| Language: | English |
|---|---|
| Publisher: | Risø National Laboratory |
| Year: | 1986 |
| Volume: | 526 |
| Pages: | 63 s. |
| Series: | Denmark. Forskningscenter Risoe. Risoe-r |
| ISBN: | 8755011934 and 9788755011939 |
| ISSN: | 01062840 |
| Types: | Printed book and Report |
