Results 21 to 30 of about 3,901 (158)
Reflectance Anisotropy of GaAs(100): Theory and Experiment [PDF]
The reflectance anisotropy has been calculated by microscopic tight-binding theory for various configurations of the As-rich GaAs(100) cs4 3 4d and s2 3 4d reconstructions, based on precise atomic coordinates from ab initio total-energy minimization. The comparison to experimental reflectance anisotropy in combination with scanning tunneling microscopy
Shkrebtii, A. +7 more
openaire +2 more sources
Analysis of Extracting Prior BRDF from MODIS BRDF Data
Many previous studies have attempted to extract prior reflectance anisotropy knowledge from the historical MODIS Bidirectional Reflectance Distribution Function (BRDF) product based on land cover or Normalized Difference Vegetation Index (NDVI) data.
Hu Zhang +6 more
doaj +1 more source
Glacier albedo determines the net shortwave radiation absorbed at the glacier surface and plays a crucial role in glacier energy and mass balance.
Shaoting Ren +9 more
doaj +1 more source
Functional Data Analysis of Multi-Angular Hyperspectral Data on Vegetation
The surface reflectance anisotropy can be estimated by directional reflectance analysis through the collection of multi-angular spectral data. Proper characterization of the surface anisotropy is animportant element in the successful interpretation of ...
Sugianto, Shawn Laffan
doaj +3 more sources
REFLECTANCE ANISOTROPY MEASUREMENTS USING A PUSHBROOM SPECTROMETER MOUNTED ON UAV AND A LABORATORY GONIOMETER – PRELIMINARY RESULTS [PDF]
During 2014–2015 we have developed a new method to measure reflectance factor anisotropy using a pushbroom spectrometer mounted on a multicopter UAV. In this paper/presentation we describe the acquisition method and show the preliminary results of the ...
J. Suomalainen +3 more
doaj +1 more source
Optical Anisotropy of Porphyrin Nanocrystals Modified by the Electrochemical Dissolution
Reflectance anisotropy spectroscopy (RAS) coupled to an electrochemical cell represents a powerful tool to correlate changes in the surface optical anisotropy to changes in the electrochemical currents related to electrochemical reactions.
Rossella Yivlialin +6 more
doaj +1 more source
The importance of surface reflectance anisotropy for cloud and NO2 retrievals from GOME-2 and OMI [PDF]
The angular distribution of the light reflected by the Earth's surface influences top-of-atmosphere (TOA) reflectance values. This surface reflectance anisotropy has implications for UV/Vis satellite retrievals of albedo, clouds, and trace gases such ...
A. Lorente +8 more
doaj +1 more source
Calibration of BRDF Based on the Field Goniometer System Using a UAV Multispectral Camera
The bidirectional reflectance distribution function (BRDF) is important for estimating the physical properties of a surface in remote sensing. In the laboratory, the BRDF can be estimated quickly and accurately using a goniometer, but it is very ...
Minji Kim +5 more
doaj +1 more source
Evaluation of BRDF Archetypes for Representing Surface Reflectance Anisotropy Using MODIS BRDF Data
Bidirectional reflectance distribution function (BRDF) archetypes extracted from the Moderate Resolution Imaging Spectroradiometer (MODIS) BRDF/Albedo product over the global Earth Observing System Land Validation Core Sites can be used to simplify BRDF
Hu Zhang +3 more
doaj +1 more source
Surface reflectance is an important data product in imaging spectroscopy for obtaining surface information. The complex retrieval of surface reflectance, however, critically relies on accurate knowledge of atmospheric absorption and scattering, and the ...
Marius Vogtli +5 more
doaj +1 more source

