Discrete Anisotropic Radiative Transfer (DART 5) for Modeling Airborne and Satellite Spectroradiometer and LIDAR Acquisitions of Natural and Urban Landscapes
Discrete Anisotropic Radiative Transfer (DART 5) for Modeling Airborne and Satellite Spectroradiometer and LIDAR Acquisitions of Natural and Urban Landscapes
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DOI：
10.3390/rs70201667
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发表时间：
2015-02-01
期刊：
影响因子：
5
通讯作者：
Ristorcelli, Thomas
中科院分区：
文献类型：
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作者：
Gastellu-Etchegorry, Jean-Philippe;Yin, Tiangang;Ristorcelli, Thomas
科学家、决策者和管理者越来越多地使用卫星和机载光学传感器来研究和管理森林、农作物和城市地区。他们通过给定的仪器规格（光谱分辨率、观测方向、传感器视场等）和特定的实验配置（地表和大气条件、太阳方向等）获得的数据通常被转化为定性和定量的地球表面参数。然而，大气特性和地球表面三维结构常常使他们的解释混淆。因此，能够模拟地球和大气复杂性的辐射传输模型是将遥感数据与地表参数联系起来的理想工具。尽管如此，许多现有的模型都过于简化了地球-大气系统的相互作用，并且它们对传感器规格的参数化常常被忽视或考虑得很差。离散各向异性辐射传输（DART）模型是模拟地球-大气辐射相互作用的最全面的基于物理的三维模型之一，从可见光到热红外波长。它自1992年以来一直在开发。它模拟了卫星和飞机上的成像辐射计和激光扫描仪入口的光学信号，以及任何实验配置和仪器规格的城市和自然景观的3D辐射预算。它是免费分发的研究和教学活动。本文介绍了DART物理基础及其用于模拟自然和城市景观大气成像光谱的最新功能，包括机载采集和光探测与测距（LIDAR）波形和光子计数信号的透视投影。
Satellite and airborne optical sensors are increasingly used by scientists, and policy makers, and managers for studying and managing forests, agriculture crops, and urban areas. Their data acquired with given instrumental specifications (spectral resolution, viewing direction, sensor field-of-view, etc.) and for a specific experimental configuration (surface and atmosphere conditions, sun direction, etc.) are commonly translated into qualitative and quantitative Earth surface parameters. However, atmosphere properties and Earth surface 3D architecture often confound their interpretation. Radiative transfer models capable of simulating the Earth and atmosphere complexity are, therefore, ideal tools for linking remotely sensed data to the surface parameters. Still, many existing models are oversimplifying the Earth-atmosphere system interactions and their parameterization of sensor specifications is often neglected or poorly considered. The Discrete Anisotropic Radiative Transfer (DART) model is one of the most comprehensive physically based 3D models simulating the Earth-atmosphere radiation interaction from visible to thermal infrared wavelengths. It has been developed since 1992. It models optical signals at the entrance of imaging radiometers and laser scanners on board of satellites and airplanes, as well as the 3D radiative budget, of urban and natural landscapes for any experimental configuration and instrumental specification. It is freely distributed for research and teaching activities. This paper presents DART physical bases and its latest functionality for simulating imaging spectroscopy of natural and urban landscapes with atmosphere, including the perspective projection of airborne acquisitions and LIght Detection And Ranging (LIDAR) waveform and photon counting signals.