Abstract
The problem of extracting a “signal” xn generated by a dynamical system from a time series yn = xn + en, where en is an observational error, is considered. It is shown that consistent signal extraction is impossible when the errors are distributed according to a density with unbounded support, and the underlying dynamical system admits bomoclinic pairs. It is also shown that consistent signal extraction is possible when the errors are uniformly bounded by a suitable constant and the underlying dynamical system has the “weak orbit separation property”. Simple algorithms for signal recovery are described in the latter case.
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Lalley, S.P. (2001). Removing the Noise from Chaos Plus Noise. In: Mees, A.I. (eds) Nonlinear Dynamics and Statistics. Birkhäuser, Boston, MA. https://doi.org/10.1007/978-1-4612-0177-9_9
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DOI: https://doi.org/10.1007/978-1-4612-0177-9_9
Publisher Name: Birkhäuser, Boston, MA
Print ISBN: 978-1-4612-6648-8
Online ISBN: 978-1-4612-0177-9
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