Journal
2016 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING PROCEEDINGS
Volume -, Issue -, Pages 4313-4317Publisher
IEEE
Keywords
Lomb-Scargle; periodogram; sinusoids; DC term
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In [1], Lomb developed a nonlinear regression approach to estimating the frequency of a noisy sinusoid when the measurement times were not equispaced, and a method for correcting the times so that the resulting regression sum of squares appeared very similar to the usual periodogram. Scargle [2] suggested that the usual periodogram be discarded, and replaced by the new version, which has become known as the Lomb-Scargle periodogram. In this paper, we extend Lomb's development to include a 'DC' term. We show why it is important to include this term, especially when the times are irregular or the frequency low.
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