|
|
1．064μm波长卷云反射率的模拟研究
Simulation study on the reflectance of cirrus clouds at the wavelength of 1.064μm
查看参考文献7篇
|
文摘
|
为了给激光测距、激光对大气的探测等实际工程应用提供理论依据，采用逐线积分方法计算大气分子吸收，结合离散纵标法，并耦合卷云的单次散射特性，对由实心六棱柱状冰晶粒子组成的卷云在波长为1．064μm时的散射特性和辐射特性进行了理论分析，得到了该波长上激光在卷云中传输时的反射率随入射光源的位置、观测器的位置以及卷云参量（云光学厚度、粒子尺度等）的关系。结果表明，卷云在1．064μm附近对激光的主要影响是散射，吸收在消光中占了很小的部分；其次，卷云的散射明显改变了光辐射的空间分布，散射的方向变化主要由卷云的散射相函数以及光线入射角度和观测角度决定。这一结果对实际工程应用（比如激光测距、激光对大气的探测等）是有帮助的。 |
|
其他语种文摘
|
In order to provide a theoretical basis for the actual application such as laser ranging and laser detection of the atmosphere,line-by-line integration was used to calculate the optical thickness of atmosphere molecular absorption. Discrete coordinate method was employed to study property of cirrus clouds at 1. 064μm with the single scattering properties of cirrus clouds and the atmospheric absorption. The influence of cirrus clouds on laser transmission was analyzed by changing the incident angle ,the observation location and some physical parameters of cirrus clouds. The results showed that the main effect of the cirrus clouds on laser transmission is scattering at 1. 064μm and the absorption take a very small part in the extinction. The spatial distribution of the radiation is changed by scattering of the cirrus clouds significantly and the direction changes of scattering are decided by scattering phase function, observation zenith angles and scattering angle. This results are helpful to the actual application. |
|
来源
|
激光技术
,2008,32(5):523-526 【核心库】
|
|
关键词
|
大气与海洋光学
;
反射率
;
离散纵标法
;
卷云
;
辐射特性
|
|
地址
|
中国科学院安徽光学精密机械研究所, 安徽, 合肥, 230031
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1001-3806 |
|
学科
|
大气科学(气象学) |
|
基金
|
中国科学院知识创新工程重要方向项目
|
|
文献收藏号
|
CSCD:3388125
|
参考文献 共
7
共1页
|
|
1.
SASSEN K. The polarization lider technique for cloud research:a review and current assessment.
Balletin of the American Meterological Society,1991,72:1848-1886
|
被引
20
次
|
|
|
|
|
2.
LIOU K N. Laser transmission through thin cirrus clouds.
Appl Opt,2000,39(27):4886-4894
|
被引
5
次
|
|
|
|
|
3.
OU S C. Laser transmission-backscattering througth inhomogeneous cirrus clouds.
Appl Opt,2002,41(27):5744-5754
|
被引
3
次
|
|
|
|
|
4.
YANG P. Parameterization of the scattering and absorption properties of individual ice crystals.
Journal of Geotechnical and Geoenvironmental Engineering,2000,105:4699-4718
|
被引
1
次
|
|
|
|
|
5.
ZHAO Y J. Scattering properties of cirrus clouds in theshortwave spectral region.
Journal of Atmospheric and Environmental Optics,2007,2(3):169-174
|
被引
1
次
|
|
|
|
|
6.
HU Y X. δ-Fit:a fast and accurate treatment of particle scattering phase functions with weighted singular-value decomposition least-squares fitting.
Journal of Quantitative Spectroscopy&Radiative Transfer,2000,65(3):681-690
|
被引
9
次
|
|
|
|
|
7.
STAMNES K. A numerically stable algorithm for discrete-ordinate-method radiative transfer in multiple scattering and emitting layered media.
Appl Opt,1988,27(13):2502-2509
|
被引
84
次
|
|
|
|
|
|
了解气象卫星更多信息，请访问