Phase extraction based on sinusoidal extreme strip phase shifting method

Mei Hui; Ming Liu; Liquan Dong; Xiaohua Liu; Yuejin Zhao

doi:10.1117/12.2192640

7 August 2015 Phase extraction based on sinusoidal extreme strip phase shifting method

Mei Hui, Ming Liu, Liquan Dong, Xiaohua Liu, Yuejin Zhao

Proceedings Volume 9623, 2015 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems; 962309 (2015) https://doi.org/10.1117/12.2192640
Event: International Conference on Optical Instruments and Technology 2015, 2015, Beijing, China

Abstract

Multiple synthetic aperture imaging can enlarge pupil diameter of optical systems, and increase system resolution. Multiple synthetic aperture imaging is a cutting-edge topic and research focus in recent years, which is prospectively widely applied in fields like astronomical observations and aerospace remote sensing. In order to achieve good imaging quality, synthetic aperture imaging system requires phase extraction of each sub-aperture and co-phasing of whole aperture. In the project, an in-depth study about basic principles and methods of segments phase extraction was done. The study includes: application of sinusoidal extreme strip light irradiation phase shift method to extract the central dividing line to get segment phase extraction information, and the use of interference measurement to get the aperture phase extraction calibration coefficients of spherical surface. Study about influence of sinusoidal extreme strip phase shift on phase extraction, and based on sinusoidal stripe phase shift from multiple linear light sources of the illumination reflected image, to carry out the phase shift error for inhibiting the effect in the phase extracted frame.

Citation Download Citation

Mei Hui, Ming Liu, Liquan Dong, Xiaohua Liu, and Yuejin Zhao "Phase extraction based on sinusoidal extreme strip phase shifting method", Proc. SPIE 9623, 2015 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems, 962309 (7 August 2015); https://doi.org/10.1117/12.2192640

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KEYWORDS

Mirrors

Phase shifts

Image segmentation

Imaging systems

Phase shifting

Segmented mirrors

CCD cameras

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