刘明华, 余模智, 何平安, 何对燕. 用光学传递函数精确测定CCD列阵最佳成像位置[J]. 武汉大学学报 ( 信息科学版), 1996, 21(2): 172-175.
引用本文: 刘明华, 余模智, 何平安, 何对燕. 用光学传递函数精确测定CCD列阵最佳成像位置[J]. 武汉大学学报 ( 信息科学版), 1996, 21(2): 172-175.
shu
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 Function[J]. Geomatics and Information Science of Wuhan University, 1996, 21(2): 172-175.
Citation: 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 Function[J]. Geomatics and Information Science of Wuhan University, 1996, 21(2): 172-175.
shu

用光学传递函数精确测定CCD列阵最佳成像位置

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

    摘要
  • 摘要: 提出一种直接采用CCD作为光电转换元件,以几何尺寸精密的CCD列阵作为狭缝,进行高精度、高密度的自动采样,扫描"刀刃扩展函数"(ESF)。再配用微型计算机技术,以数字付里叶分析方法测量光学传递函数(OTF)。基于CCD测试OTF的实现,可直接精确判定CCD列阵的最佳成像位置。

     

    Abstract: 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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