1 长春理工大学, 长春 130022
2 光电测控与光电信息传输技术教育部重点实验室, 长春, 130022
3 吉林省光电测控仪器工程技术研究中心, 长春 130022
4 空军航空大学, 长春 130022
为了实现用于校准能见度仪的标准散射体的快速高精度定标, 依据标准散射体校准前向散射式能见度仪的校准原理, 建立定标系统中光学系统的误差分析方法.分析标准散射体定标系统的工作原理, 结合其光学系统、机械结构的加工及装调偏差, 建立了标准散射体定标系统的光学系统模型并设计实验证明其正确性.分析影响定标系统中光学系统精度的主要误差, 得到标准散射体定标系统中光学系统的误差传递模型.通过对畸变偏差、像面位置偏差、主点位置偏差、像面倾斜偏差和焦距偏差的分析, 提出了一种系统综合误差分析的方法并建立了综合偏差模型, 对每个偏差单独分析, 得出畸变偏差、像面位置偏差、主点位置偏差、像面倾斜偏差和焦距偏差的偏差范围依次为0.024 mm, 0.399 mm, 0.02 mm, 0.28 rad和0.392 mm.该研究为提高用于校准能见度仪的标准散射体定标系统的精度以及校准时误差的来源分析与补偿提供理论依据.
能见度与成像 像差补偿 光学设计及装配 校准 气象仪器 Visibility and imaging Aberration compensation Optical design and fabrication Calibration Meteorological instrument
Author Affiliations
Abstract
The equivalence of the modulation transfer function (MTF) of a turbid medium and the transmitted radiance from the medium under isotropic diffuse illumination is demonstrated. MTF of a turbid medium can be fully evaluated by numerically solving a radiative transfer problem in a plane parallel medium. MTF for a homogenous single layer turbid medium is investigated as illustration. General features of the MTF in the low and high spatial frequency domains are provided through their dependence on optical thickness, single scattering albedo, asymmetrical factor, and phase function type.
010.5620 Radiative transfer 110.0113 Imaging through turbid media 110.4100 Modulation transfer function 010.7295 Visibility and imaging Chinese Optics Letters
2012, 10(2): 020101
