Accuracy of the maximum entropy method

Details Accuracy of the maximum entropy method Accuracy of the maximum entropy method

Jan 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....81..344s&link_type=abstract

Astronomy and Astrophysics, vol. 81, no. 3, Jan. 1980, p. 344-346. Research supported by the Conselho Nacional de Pesquisas and

Astronomy and Astrophysics

Astrophysics

2

Autocorrelation, Entropy, Information Theory, Spectrum Analysis, Stellar Spectra, Astrophysics, Geophysics, Sine Waves

Scientific paper

Although the maximum entropy method is capable of giving the period of a pure sine wave with very few data points, it is very sensitive to noise. The half power width of a spectral peak obtained by this method is proportional to the square of the ratio of the standard deviation of the noise to the semiamplitude of the light curve. More serious are the consequences of a systematic shift of the spectral peak, by an amount proportional to the same factor. A simple autocorrelation method that is free of systematic errors is also discussed.

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