Precision Determination of the Best Imaging Position of CCD Array of Space Camera with Optical Transfer Function

Liu Minghua; Yu Mozhi; He Ping'an; He Duiyan

Liu Minghua, Yu Mozhi, He Ping'an, He Duiyan. Precision Determination of the Best Imaging Position of CCD Array of Space Camera with Optical Transfer FunctionJ. Geomatics and Information Science of Wuhan University, 1996, 21(2): 172-175.

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Precision Determination of the Best Imaging Position of CCD Array of Space Camera with Optical Transfer Function

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A measurement method of optical transfer function(OTF)is discribed in this paper,in which charge-coupled device(CCD)in space camera,with an image sampler joined up with a PC,is used directly as an optoelectronic element.Knife edge scanning with high precision and high sampling density and digital Fourier analysis method is adopted.After measuring the defocal MTF curve of space camer-a,the best imageing position is determined precisely.

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Precision Determination of the Best Imaging Position of CCD Array of Space Camera with Optical Transfer Function

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