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http://cio.repositorioinstitucional.mx/jspui/handle/1002/413| Robust Adaptive Phase-Shifting Demodulation for Testing Moving Wavefronts | |
| JULIO CESAR ESTRADA RICO MANUEL SERVIN GUIRADO | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| Optical interferometers are very sensitive when environment perturbations affect its optical path. The wavefront under test is not static at all. In this paper, it is proposed a novel and robust phase-shifting demodulation method. This method estimates the interferogram’s phase-shifting locally, reducing detuning errors due to environment perturbations like vibrations and/or miscalibrations of the Phase-Shifting Interferometry setup. As we know, phase-shifting demodulation methods assume that the wavefront under test is static and there is a global phase-shifting for all pixels. The demodulation method presented here is based on local weighted least-squares, letting each pixel have its own phase-shifting. This is a different and better approach, considering that all previous works assume a global phase-shifting for all pixels of interferograms. Seeing this method like a black box, it receives an interferogram sequence of at least 3 interferograms and returns the modulating phase or wav | |
| 02-12-2013 | |
| Artículo | |
| CIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA | |
| Aparece en las colecciones: | Articulos Arbitrados 2013 |
Cargar archivos:
| Fichero | Tamaño | Formato | |
|---|---|---|---|
| Robust adaptive phase-shifting.pdf | 1.36 MB | Adobe PDF | Visualizar/Abrir |