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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Structure-preserving machine learning moment closures for the radiative transfer equation
辐射传递方程 结构保持 机器学习 矩闭包
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2023/4/24
In this talk, we present our work on structure-preserving machine learning (ML) moment closure models for the radiative transfer equation. Most of the existing ML closure models are not able to guaran...
A MODEL TO SIMULATE THE RADIATIVE TRANSFER OF FLUORESCENCE IN A LEAF
Leaf optical properties Chlorophyll fluorescence Radiative transfer Monte-Carlo method Photon packet Ray tracing
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2018/5/16
Light is reflected, transmitted and absorbed by green leaves. Chlorophyll fluorescence (ChlF) is the signal emitted by chlorophyll molecules in the leaf after the absorption of light. ChlF can be used...
GEOMETRICAL AND STRUCTURAL PARAMETERIZATION OF FOREST CANOPY RADIATIVE TRANSFER BY LIDAR MEASUREMENTS
Remote Sensing Forestry LIDAR Vegetation Modelling Structure
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2015/12/30
A forest canopy is a complex system with a highly structural multi-scale architecture. Physical based radiative transfer (RT) modelling has been shown to be an effective tool for retrieval of vegetati...
MAPPING OF FOLIAR CONTENT USING RADIATIVE TRANSFER MODELING AND VIS-NIR HYPERSPECTRAL CLOSE-RANGE REMOTE-SENSING
Close-range remote sensing Hyperspectral Leaf optical properties Radiative transfer model Vegetation
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2015/9/21
Most methods for retrieving foliar content from hyperspectral data are well adapted either to remote-sensing scale, for which each spectral measurement has a spatial resolution ranging from a few doze...
RADIATIVE TRANSFER MODEL INVERSION BASED ON MULTI-TEMPORAL CHRIS/PROBA DATA FOR LAI ESTIMATION
Leaf area index Radiative transfer Dynamic canopy model
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2015/9/8
Leaf area index (LAI) is a key variable for the understanding and modelling of several eco-physiological processes within a
vegetation canopy. The LAI could thus provide vital information for the man...
STOCHASTIC RADIATIVE TRANSFER MODEL FOR MIXTURE OF DISCONTINUOUS VEGETATION CANOPIES
Radiative Transfer Theory Three-domensional effects
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2015/9/8
Modeling of the radiation regime of a mixture of vegetation species is a fundamental problem of the Earth’s land remote sensing and
climate applications. The major existing approaches, including the ...
Radiative transfer modelling and the retrieval of biophysical variables
Radiation transfer modelling multi-angular observations bio- geophysical variable extraction
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2015/9/2
Natural surfaces, such as vegetation and soil, do not - as a rule - reflect incident solar radiation equally in all directions. This
reflectance anisotropy is formally described by a Bidirectional Re...
MODELING LIDAR WAVEFORMS USING A RADIATIVE TRANSFER MODEL
Lidar Radiative transfer modeling Canopy structure
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2015/3/10
In the past, obtaining reliable measurements of key forest canopy metrics has been difficult, even after the development of remote sensing technology.Fortunately, next-generation lidar systems are pro...
Estimation of aerosol optical depth over Dehradun (India) using simple model for atmospheric radiative transfer in multiple scattering approximation
SMART multiple scattering approximation AWiFS aerosol optical depth
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2014/12/15
Aerosol optical depth retrieval over land surface using remote sensing employs the use of radiative transfer simulations and/or simultaneous measurements of atmospheric parameters at the time of satel...
Estimation of Miniature Forest Parameters, Species, Tree Shape, and Distance Between Canopies by Means of Monte-Carlo Based Radiative Transfer Model with Forestry Surface Model
Monte Carlo simulation Radiative transfer Canopy reflectance Ellipse and cone tree shape model
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2009/3/18
A method for estimation of forest parameters, species, tree shape, distance between canopies by means of Monte-Carlo based radiative transfer model with forestry surface model is proposed. The model i...