Multiple phase estimation via signal separation using a windowed Fourier transform in digital holographic interferometry. (12th June 2015)

• Record Type: Journal Article
• Authors: Kulkarni, Rishikesh; Rastogi, Pramod
• Is Part Of: Measurement science & technology. Volume 26:Number 7(2015:Jul.)
• Publication Date: 2015-06-12
• Subjects: digital holographic interferometry -- in-plane displacement -- out-of-plane displacement -- multiple phase estimation -- windowed Fourier transform -- amplitude discrimination -- signal separation; Physical measurements -- Periodicals; Scientific apparatus and instruments -- Periodicals; Equipment and Supplies -- Periodicals; Science -- instrumentation -- Periodicals; Technology -- instrumentation -- Periodicals; Mesures physiques -- Périodiques; Physical measurements; Scientific apparatus and instruments; Periodicals; 502.87
• DOI: 10.1088/0957-0233/26/7/075204
• Languages: English
• ISSNs: 0957-0233

Abstract

Abstract: This paper proposes a novel method for the simultaneous estimation of multiple interference phases from a single recording of the interference field in a multi-wave digital holographic interferometry set-up. The method involves the separation of signal components from the recorded interference field based on windowed Fourier transform based filtering and amplitude discrimination criteria. The proposed method possesses the advantages offered by windowed Fourier transform based filtering such as noise robustness and a high quality reconstruction of the signal components. The performance of the method is validated with numerical and experimental examples.