19 October 2016 Theoretical analysis and estimation of decorrelation phase error in digital holographic interferometry
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Proceedings Volume 10155, Optical Measurement Technology and Instrumentation; 101550U (2016) https://doi.org/10.1117/12.2245007
Event: International Symposium on Optoelectronic Technology and Application 2016, 2016, Beijing, China
Abstract
In order to theoretically analyze and estimate decorrelation phase error in digital holographic interferometry, the principle of digital holographic imaging system is introduced in this paper, and general point spread function (PSF) of digital holographic system is derived and its approximate function is obtained. According to the characteristics of the digital holographic imaging in accordance with the laws of statistical optics, the expression of complex amplitude standard deviation of σA, σB and σC in each region of the double exposure time and the relationship between the degree of decorrelation are derived, and the expression of the phase error of decorrelation is given. It is simulated in MATLAB, simulative results indicate that statistical properties of decorrelation phase error obtained through theory analysis correspond to decorrelation phenomenon. And the measuring condition, in digital holography interferometry, which decorrelation degrees between the holographies of every double exposure should satisfy ρx + ρy <0.1, is derived.
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Tao Zhang, Yining Yan, Qingkai Mo, "Theoretical analysis and estimation of decorrelation phase error in digital holographic interferometry", Proc. SPIE 10155, Optical Measurement Technology and Instrumentation, 101550U (19 October 2016); doi: 10.1117/12.2245007; https://doi.org/10.1117/12.2245007
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