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On sinusoid estimation in nonstationary noise

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3 Author(s)
Frazho, A.E. ; Sch. of Aeronaut. & Astronaut., Purdue Univ., West Lafayette, IN, USA ; Yagci, B. ; Sumali, H.

This note presents a sinusoid estimation algorithm, which will converge to the spectrum of the sinusoid process in nonstationary additive noise. The algorithm is in the framework of the tangential Nevanlinna-Pick setting. The procedure is a generalization of Capon's maximum likelihood estimate and some classical limit theorem for orthogonal polynomials. The method is used in an experimental example to find the natural frequencies of a lightly damped structure.

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Automatic Control, IEEE Transactions on  (Volume:49 ,  Issue: 5 )