Dynamical evaluation of interference fringe parameters by the Wiener adaptive filtering method
Autor: | Igor P. Gurov, Vlada Kapranova, Pavel Skakov |
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Rok vydání: | 2021 |
Předmět: |
business.industry
Astrophysics::Instrumentation and Methods for Astrophysics Phase (waves) Signal Atomic and Molecular Physics and Optics Adaptive filter Interferometry Optics Interference (communication) Limit (mathematics) Electrical and Electronic Engineering business Envelope (mathematics) Engineering (miscellaneous) Algorithm Impulse response Mathematics |
Zdroj: | Applied Optics. 60:6799 |
ISSN: | 2155-3165 1559-128X |
Popis: | Application of the Wiener adaptive filtering method for estimation of interferometric signal parameters is presented and analyzed. It is shown that the fringe phase, as well as the envelope of low-coherence interference fringes, can be evaluated directly from the adaptive filter impulse response obtained under the criterion of the minimum error variance of a processed fringe signal and predefined reference signal. The method does not limit the number and value of the phase shifts and allows determination of the actual phase step. The accuracy of the method is evaluated and experimental results of dynamical fringe processing in low-coherence interferometry are presented. |
Databáze: | OpenAIRE |
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