Analysis of Deterministic Components of Biperiodically Correlated Random Signals
2020 10th International Conference on Advanced Computer Information Technologies (ACIT)(2020)
Abstract
The estimators of deterministic part parameters for biperiodically nonstationary vibration signal, obtained by the least squares method (LSM), are analyzed. The formulae for LSM-estimator variances and bias, which describe their dependencies on realization length and signal covariance components, are obtained. It is shown that LSM allows to avoid leakage effects and to obtain unbiased estimators of biperiodic nonstationary vibration signal deterministic part for arbitrary realization length and harmonic frequencies.
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Key words
Vibrations,Harmonic analysis,Least mean squares methods,Frequency estimation,Stochastic processes,Frequency modulation
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