title: Analysis of the principal component algorithm in phase-shifting interferometry.
abstract: We recently presented a new asynchronous demodulation method for phase-sampling interferometry. The method is based in the principal component analysis (PCA) technique. In the former work, the PCA method was derived heuristically. In this work, we present an in-depth analysis of the PCA demodulation method.
authors.affiliation: Laboratorio de Instrumentación Espacial, Instituto Nacional de Técnica Aeroespacial, Carretera de Ajalvir Km 4, 28850, Torrejón de Ardoz (Madrid), Spain. jvargas@fis.ucm.es
authors.forename: J
authors.initials: J
authors.lastname: Vargas
authors.forename: J Antonio
authors.initials: JA
authors.lastname: Quiroga
authors.forename: T
authors.initials: T
authors.lastname: Belenguer