Effect of Orientation of Ice Crystals in Cirrus on Direct and Scattered Solar Radiation Fluxes

Russian Physics Journal - The problem of solar radiation transfer by cirrus containing horizontally oriented ice crystals urgent today is considered. The results of a complex radiation experiment...     

Polarization of Lidar Returns from Water Clouds: Calculations and Laboratory Scaled Measurements

The main features of a Monte Carlo code developed to deal with polarization of lidar returns from water clouds in multiple scattering regime are described. The paper presents an example of results pertaining to a stratified cloud structure, and a series of comparisons of calculation results with measurements carried out in the laboratory. For double scattering a comparison of Monte Carlo results with those of an analytical formula is also given.Presented at the 7th International Workshop on Multiple Scattering Lidar/Light Experiments (MUSCLE7), July 21–23 1994, Chiba, Japan.     

Electric Polarization of Inhomogeneously Strained Rare-Earth Crystals with a Garnet Structure and Related Films

Physics of the Solid State - The influence of inhomogeneous strains on the occurrence of electric polarization of rare-earth compounds with a garnet structure has been analyzed. Polarization of the...     

高光谱溢油检测中云背景抑制方法研究

针对高光谱图像溢油检测过程中云背景的干扰问题,提出一种高光谱场景云背景抑制方法.首先,分析了海面溢油的光谱反射率特性,根据海面溢油中C-H键的光谱特征,介绍了基于伪彩图像的溢油检测方法.其次,比较了高光谱场景中海水、溢油和云背景的辐射特性,依据云背景辐射特性的特点,设计了一种新的云背景辐射光谱特征提取模型,在此基础上,进一步考虑云、海面与溢油的差异,选取云辐射最大的波段图像,结合云背景辐射光谱特征生成云背景抑制图.最后,将云背景抑制图与溢油伪彩图像相乘,得到云背景抑制结果.将本文提出的方法应用于实际墨西哥湾Airborne Visible InfraRed Imaging Spectrometer高光谱遥感影像的海面溢油的检测,结果表明本文提出的方法能够在不影响溢油检测条件下,有效地消除高光谱溢油检测过程中云背景的影响.     

Subwavelength Focusing of Light Reflected from a Silver Surface with a Periodic Structure

JETP Letters - It is demonstrated that the reflection of light from the surface of silver with a periodic structure in the form of a one-dimensional grating can lead to subwavelength focusing of...     

基于不规则衍射理论的冰晶粒子的光散射研究(英文)

在不规则衍射理论的基础上,分析了从可见光到近红外波段冰晶粒子的光散射特性。计算了粒子尺度为20μm,50μm,80μm的五种典型冰晶粒子的消光效率因子和吸收效率因子。最后,为了评估不规则衍射理论的精确性,与有限时域差分法和几何光学法进行了比较。     

Transition Mechanism from Semimetallic to Semiconductor Behavior in a Graphene Film at the Formation of a Multiply Connected Structure

JETP Letters - Recently, it has been found that “closed” nanopores with connected edges lying in neighboring layers can be formed in films consisting of one-to-five-layer graphene...     

Polarization Amplitude-Based Method of Determining the Bearing and Roll Angles of an Object in Motion from Orthogonal Circularly Polarized Signals of a Radio Beacon

Russian Physics Journal - The possibility of determining the bearing and roll angles of an object in motion is investigated based on orthogonal left- and right-hand circularly polarized signals...     

Photovoltaic Fields and the Secondary Structure of Nominally Pure Lithium Niobate Crystals Grown from a Boron-Doped Furnace Charge

Technical Physics - It has been shown that the growth of nominally pure lithium niobate crystals from a nonmetal (boron)-structured melt makes it possible to control the secondary phase, optical...