嫦娥一号IIM数据定标的改进方法

嫦娥一号月球探测卫星的IIM数据在应用之前,必须进行反射率定标．本文在反射率定标之前,对原始2c级IIM数据进行了坏线和坏点修复,以及条纹去除．由于条纹去除后的IIM影像不存在平场效应,有效地抑制了坏线、坏点和平场效应对反射率转换的影响,获得较已有IIM数据定标更好的结果．通过对比月球典型地区的IIM光谱与地基望远镜光谱,计算得到两者之间的增益和漂移因子．将上述增益和漂移因子应用到月球的其他区域,包括Apollo16和14登陆点,Mare Serenitatis和Copernicus撞击坑等区域,均得到理想的校正结果．表明上述增蒲和漂移因子可有效她校正月表的光谱     

异丙醇溶液对单晶硅太阳能电池表面织构化的影响

对晶向为(100)的p型单晶硅片进行表面刻蚀,制作减反射绒面.在质量分数为3%的氢氧化钠溶液中分别加入不同质量分数的异丙醇溶液,在温度为80℃、时间为40 min的条件下对单晶硅片进行刻蚀.实验结果显示,加入质量分数为8%的异丙醇溶液刻蚀的硅片表面形貌最好,在波长为700～900nm范围内能够获得较低的反射率,最佳反射率为10.42%.保持实验条件不变,在氢氧化钠-异丙醇混合液中分别加入不同质量分数的碳酸钠溶液,对单晶硅片进行刻蚀.实验结果显示,加入质量分数为0.5%的碳酸钠溶液对制作绒面的反射率影响不大,加入质量分数为0.3%的碳酸钠溶液使制作绒面的反射率大大提高,不利于制作绒面的形成.     

视距线图的实践研究

野外视距是微光电视的一个重要指标。本文叙述了影响视距的因素,以及计算及评价的方法,可作进一步控制质量之用。最后把公式化为“视距线图”经过实践进行修正,利用此图能快速地预计观察的视距,具有实用的价值。本文主要为 WD—1型微光电视而写的、对于其他类型微光电视稍加修改亦可应用。     

Recipes Prediction by Matching to K/S Values Based on New Two-constant Theory

A concept of new two-constant of colorant, both （ R/St ） and （s/St）, is introduced based on the Kubelka-Munk theory. A new two-constant theory for color matching is presented. Basic equations used in matching to K/S values are given in matrix form based on the new two-constant theory. Algorithm for a least-squares match to K/S values of a sample is developed by use of the new two-constant theory. The algorithm is suitable for single-constant theory as well as two-constant theory. The experimental data show that calculating K/S values of disperse dyes based on new two- constant theory are accordant with the measuring ones. The recipes predicted by new two-constant theory arc closer to the actual recipes of the standard sample than the recipes predicted by single-constant theory. The sample according to the recipe predicted by new two-constant theory has smaller color difference against for the standard than the sample according to the recipe predicted by single-constant theory. The results show that the scattering of disperse dyes cannot be negligible, and that the recipes match to textiles colored by disperse dyes should be predicted by using of new two-constant theory.     

EFFECTS OF DEPOSITION PARAMETERS ON SPECTRAL TRANSMISSION OF MgF2／SiO ANTIREFLECTIVE COATING

In this paper, the effects of evaporating temperature and film thickness on the spectral transmission of MgF2/SiO antireflective coating were investigated.     

航天光学遥感器目标与背景仿真系统研究

文章介绍了航天遥感用的目标与背景全物理仿真系统的组成，试验和计算方法，对多种目标与背景的试验和计算结果进行了比对，证明系统可行，可以用于航天遥感器的仿真。通过建立的物理仿真系统，可以模拟航天光学遥感器在空间摄影的条件，可以选择适宜的成像条件(太阳高度角、观测方位角、观测时刻、相机光学系统参数、接收器参数等)；仿真分析CCD相机系统主要参数(光学系统和接收器)是否正确；对各种主要目标与背景完成实验室成像试验。     

一种新型低成本的单晶硅表面织构化方法的研究

为了增加单晶硅太阳电池的光谱吸收,提高太阳能电池的光电转换效率,用一种新型的腐蚀剂磷酸钠对单晶硅表面进行织构化研究,分析腐蚀液的浓度、反应时间、反应温度对制备单晶硅太阳能电池绒面的影响,并研究添加剂异丙醇(IPA)对磷酸钠(Na3PO4·12H2O)制绒效果的影响.当磷酸钠的浓度为13%wt,反应温度为85℃,反应时间为25min时能制备出金字塔大小均匀、覆盖致密的绒面,并在400-800nm光谱范围内获得最低反射率12.41%.适量的添加IPA有助于制绒效果的改善,可以使反射率更低.此制绒方法重复性好、价格低廉,是一种很有前景的制绒方法,可以进行大面积生产.     

光纤光栅Gires-Tournois标准具的特性研究

该文提出利用光纤光栅来设计光纤光栅Gires-Tournois(G-T)标准具.用传输矩阵法对光纤光栅G-T标准具的光谱特性进行了分析.研究表明,强光栅决定了光纤光栅G-T标准具的反射率和带宽,弱光栅主要影响其时延和色散特性,强弱光栅之间的间隔决定了光纤光栅G-T标准具的自由光谱范围.最后还给出了自由光谱范围为25 GHz的光纤光栅G-T标准具的设计参数.     

Impact of cloud inhomogeneity on bi-directional reflectance

This paper uses SHDOM （Spherical Harmonics Discrete Ordinate Method） to calculate the nadir bidirectional reflectance distribution function （BRDF） of the cumulus and stratocumulus fields at the wavelengths of 0.67 μm and 2.13 μm, and discusses the impact of cloud inhomogeneity on BRDF. The cloud fields are adopted from 13RC Phase Ⅱ, which are used to compare 3D radiative transfer models. The simulation results show that the cu field has 6% abnormal BRDF values （BRDF〉1） with the increase of solar zenith angle. Further analyses show that grid cells whose BRDF is greater than one gather together at the local trough of the top of cloud. These regions can receive not only the direct incident solar beam, but also the beam scattered by the higher cloud of its neighborhood. Hence, the BRDF of those regions is enhanced. The abnormal BRDF phenomenon shows that the cloud inhomogeneity can result in inconsistency between satellite observation and plane parallel theory, implying that the reflectance observed by high resolution satellite is maybe enhanced by the cloud 3D effects. Thus one should take this fact into account when using the product retrieved by these data. The dominant solar zenith angles are quite large in the mid-high altitude area, and the impact of cloud inhomogeneity on these areas may be more significant.     

东营凹陷有效烃源岩成熟度评价

东营凹陷沙三段下亚段—沙四段上亚段有效烃源岩的镜质体反射率存在明显的抑制作用.利用2套有效烃源岩的FAMM分析成果,对其成熟度进行了重新评价.结果表明:烃源岩的有机质类型越好,镜质体反射率抑制程度越强;沙三段下亚段有效烃源岩的真实成熟度一般应在0.56%~1.01%,沙四段上亚段有效烃源岩的真实成熟度一般应在0.58%~1.30%.