Abstract
This paper analyses the detuning error in determining the fringe amplitude with phase-shifting interferometry (PSI) algorithms. The detuning error occurs when the phase-shift step size is not calibrated. The PSI algorithm is treated as a quadrature filter and the analysis is based on the filter function (FF) of the PSI algorithm. A mathematical expression has been derived showing that the detuning error consists of a bias error and a 2ϕ dependent error, where ϕ is the fringe phase. Examples of PSI algorithms are investigated. Computer simulations are performed to check the theoretical detuning errors for the PSI algorithms.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
