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Spectral analysis of phase shifting algorithms | |
Manuel Servín Guirado Julio C. Estrada | |
Acceso Abierto | |
Atribución-NoComercial-SinDerivadas | |
Systematic spectral analysis of Phase Shifting Interferometry (PSI) algorithms was first proposed in 1990 by Freischlad and Koliopoulos (F&K). This analysis was proposed with the intention that “in a glance” the main properties of the PSI algorithms would be highlighted. However a major drawback of the F&K spectral analysis is that it changes when the PSI algorithm is rotated or its reference signal is time-shifted. In other words, the F&K spectral plot is different when the PSI algorithm is rotated or its reference is time-shifted. However, it is well known that these simple operations do not alter the basic phase demodulation properties of PSI algorithms, except for an unimportant piston. Here we propose a new way to analyze the spectra of PSI algorithms which is invariant to rotation and/or reference time-shift among other advantages over the nowadays standard PSI spectral analysis by F&K. | |
31-08-2009 | |
Artículo | |
CIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA | |
Appears in Collections: | Articulos Arbitrados 2009 |
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