Example signals. Two example signals and their spectral estimates (scaled). The first simulated time series (a) is sampled according to the experimental mussel data. The sampling of the second time series (c) is an artificially deteriorated version of the first one. The corresponding spectral estimates, (b) and (d), include the ideal periodogram (Ideal periodogram), as if the time series was sampled uniformly and had no added noise, the periodogram of the samples (Periodogram). ignoring time indices, and the M-estimate (Robust (M) estimator).
Ahdesmäki et al. BMC Bioinformatics 2007 8:233 doi:10.1186/1471-2105-8-233