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- W2329523889 abstract "In order to overcome the wave-front distortion caused by atmosphere turbulence and optical system aberration,the Phase-Diverse Speckle(PDS) method was used to collect simultaneouslly two or more short-exposure optical images formed by focusing or defocusing to estimate both the object and the wave-front phases.To verify the improvement of image resolution and phase estimation of PDS method,a comparison experiment on high-resolution imaging and phase estimation comparison was carried out based the PDS method and a Shack-Hartmann sensor.By shifting the high accurate translation stage at a certain distance,the focusing and defocusing images were obtained,then the wavefront phase based on the image was camparied with that from the Shack-Hartmann sensor.Experiment results indicate that the estimated wave-front phase is highly according with that detected by Shack-Hartmann and the resolution of the restored image can increase by 12% compared with the origin image formed by focus plane.In conclustion,the proposed method can be used to restore the degradative images in large aperture telescopes." @default.
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- W2329523889 date "2011-01-01" @default.
- W2329523889 modified "2023-09-23" @default.
- W2329523889 title "Image restoration by phase-diverse speckle" @default.
- W2329523889 doi "https://doi.org/10.3788/ope.20111905.1165" @default.
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