搜索结果: 1-15 共查到“知识库 BRDF”相关记录28条 . 查询时间(0.062 秒)
ANALYSIS OF ACCURACY OF MODIS BRDF PRODUCT (MCD43 C6) BASED ON MISR LAND SURFACE BRF PRODUCT – A CASE STUDY OF THE CENTRAL PART OF NORTHEAST ASIA
MODIS BRDF, model accuracy, MISR BRF, vegetation phenology, snow cover
2018/5/14
EOS/MODIS land surface Bi-directional Reflectance Distribution Function (BRDF) product (MCD43), with the latest version C6, is one of the most important operational BRDF products with global coverage....
激光主动成像中的BRDF特性
光主动成像 BRDF 图像分析 漫反射
2018/3/12
分析了常用的收发同路的BRDF函数模型，引入实折射率的函数描述介质特性进一步简化SUN模型，在传统的BRDF测试系统基础上，提出了一种基于图像分析的收发同路BRDF分析方法，采用激光主动成像实验系统照明目标样品板并成像，通过改变目标板与成像系统之间的夹角获得不同角度目标图像，进而利用图像灰度信息计算目标的BRDF值，最终得出BRDF曲线。针对不同材质进行了实验测量和仿真分析，结果表明：镜面反射目标...
EVALUATION OF THE MAIN CEOS PSEUDO CALIBRATION SITES USING MODIS BRDF/ALBEDO PRODUCTS
Satellites Calibration Multi-Spectral BRDF/Albedo MODIS
2016/7/4
This work describes our findings about an evaluation of the stability and the consistency of twenty primary PICSs (Pseudo-Invariant Calibration Sites). We present an analysis of 13 years of 8-daily MO...
PRE-PROCESSING OF DUAL-VIEW FIGOS DATA:TOWARDS OPERATIONAL BRDF RETRIEVAL
Spectral Database Metadata Spectral Processing BRDF
2015/12/30
The Bidirectional Reflectance Distribution Function (BRDF) is an inherent property of natural and manmade materials. Its effects depend on the illumination/observation geometry and wavelengths and are...
ATMOSPHERIC CORRECTION,REFLECTANCE CALIBRATION AND BRDF CORRECTION FOR ADS40 IMAGE DATA
Multispectral Modelling Aerial Calibration Land Use Mapping Atmosphere Radiometry Correction
2015/12/30
A new radiometric workflow for ADS40 line scanner data has been developed and implemented. It includes now two additional atmospheric correction algorithms and an empirical BRDF correction. Both atmos...
MERIS LAND SURFACE BRDF/ALBEDO RETRIEVAL USING DATA FUSION WITH MODIS BRDF AND ITS VALIDATION USING CONTEMPORANEOUS EO AND IN SITU DATA PRODUCTS
situ data products data fusion
2015/9/8
A representative BRDF/albedo is required by ESA1
for the improved retrieval of atmospheric products,
such as water vapour, from the ENVISAT-MERIS instrument. This BRDF/albedo is required at 13 of t...
基于BRDF模型的空中目标激光散射特性分析
激光散射 目标特性 双向反射分布函数 模型仿真
2016/7/25
获取目标的激光散射特性信息是进行激光主动探测的重要步骤，从外形特征、表面材料等方面进行了空中目标特性分析，研究了目标光散射模型以及单站激光雷达双向反射分布函数模型，通过三维建模软件建立了空中目标模型，仿真了4种空中目标的双向反射分布函数分布情况，给出相应分析，所得结果是进行激光主动探测回波波形的获取及后续目标探测与识别的基础。
BI-DIRECTIONAL REFLECTANCE DISTRIBUTION FUNCTION (BRDF) RETRIEVALS FROM LABORATORY MULTIANGLE MEASUREMENTS
Bi-Directional Reflectance Distribution Function multiangle observation hyperspectral instrument data processing parameter retrievals
2015/5/29
Theoretical investigations and intense experimental activity have being devoted to study the geometricalproperties of reflection from a surface, that is expressed in terms of Bi-Directional Reflectanc...
BRDF CORRECTION ON AVHRR IMAGERY FOR SPAIN
Remote Sensing Radiometry Correction Model Land Cover
2015/5/27
The free reception of Advanced Very High Resolution Radiometer (AVHRR) data keeps a growing interest for the remote sensing community concerned with vegetation studies on regional and global ...
基于小斜率近似法建立了粗糙面激光散射双向反射分布函数的数学模型, 采用该模型计算了粗糙度参量已知的合金铝样片的双向反射分布函数值, 计算结果与实测结果吻合良好, 验证了模型的正确性.研究了粗糙度参量和样片光学常量对双向反射分布函数的影响, 结果表明, 粗糙面激光散射的双向反射分布函数与表面高度起伏均方根、自相关长度及样片光学常量相关.当入射波长一定时, 高度起伏均方根越大, 或者自相关长度越小, ...
BRDF MEASUREMENTS OF URBAN SURFACE MATERIALS AT THE EGO FACILITY USING A LASER SOURCE
BRDF Laser EGO Goniometer Polarization Diffuse scattering
2014/12/31
In this paper we present a study of the BRDF characteristics of urban surface materials (e.g. roof coverings). Multiangular measurements were made at the European Goniometer Facility, Ispra, Italy. We...
基于MB模型的简化偏振BRDF模型建立与仿真
偏振BRDF模型建立 偏振度 Stokes矢量 粗糙度
2016/8/10
偏振BRDF模型的计算往往非常复杂,为了简准确地获取伪装目标和背景的反射光偏振度差值,采用特殊值法和理想化方法对Maxwell-Beard BRDF模型中的微面元分布函数和遮蔽函数进行简化,使微面元分布函数较Torrance-Sparrow模型准确,较Maxwell-Beard模型更简单.然后利用Fresnel反射中物体对光线平行分量和竖直分量反射率不同的性质,采用物理理论分析的方法计算得到表示反...
硅太阳能电池板的光谱BRDF测量及色度特性的研究
光谱双向反射分布函数 双向反射系数 光谱反射率因数 色度 光散射
2016/9/2
实验测量了硅太阳能电池板在380～780 nm内的光谱双向反射分布函数（BRDF），分析了光谱双向反射分布函数随波长及散射角的变化趋势，将色度学理论和光散射理论相结合，寻找到光散射理论中的双向反射系数与色度学中光谱反射率因数的联系，进而获得了一种通过光谱BRDF测量实现物体色度特性表征的方法。并且采用CIELAB均匀色空间中的明度指数和色品指数、定量地描述了几种入射条件下、不同散射方向上目标样片的...
基于BRDF的排气系统红外辐射特征计算研究
排气系统 红外辐射 反向蒙特卡罗法 双向反射分布函数
2012/9/7
为了提高涡扇发动机排气系统红外辐射强度的计算精度,研究了壁面反射特性对计算结果的影响。红外辐射特征的计算采用反向蒙特卡罗(RMC)法,壁面反射采用双向反射分布函数(BRDF)和漫反射两种模型,并将计算得到的红外辐射强度与模型试验测试结果进行了对比。通过研究BRDF模型参数的变化对计算结果的影响确定了所采用模型中参数的取值。结果表明:壁面反射采用BRDF模型是提高红外辐射计算精度的有效途径。对于本文...
UAV BASED BRDF-MEASUREMENTS OF AGRICULTURAL SURFACES WITH PFIFFIKUS
UAVs Photogrammetry BRDF camera calibration four vision camera
2014/5/9
BRDF is a common problem in remote sensing and also in oblique photogrammetry. Common approaches of BRDF-measurement
with a field goniometer are costly and rather cumbersome. UAV's may offer an inte...