Unevenly-sampled signals: a general formalism for the Lomb-Scargle periodogram

  title={Unevenly-sampled signals: a general formalism for the Lomb-Scargle periodogram},
  author={Roberto Vio and P Andreani and A D Biggs},
  journal={Astronomy and Astrophysics},
The periodogram is a popular tool that tests whether a signal consists only of noise or if it also includes other components. The main issue of this method is to define a critical detection threshold that allows identification of a component other than noise, when a peak in the periodogram exceeds it. In the case of signals sampled on a regular time grid, determination of such a threshold is relatively simple. When the sampling is uneven, however, things are more complicated. The most popular… Expand
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