农田辐射传输光学遥感成像模拟研究综述

首先对光电物理仿真、图像合成法、计算机图形学法及遥感物理模型法等光学遥感成像模拟方法的技术方法和研究进展进行了分析, 其中由于遥感物理模型法较为详细地刻画了真实辐射传输过程, 成为国内遥感成像模拟的主要发展趋势。然后对作物关键参数时空变化分析、农田辐射传输建模及遥感成像模拟系统等方面进行了分析讨论, 表明结合作物全生育期结构、光谱变化特征, 进而建立叶片?土壤?冠层?大气?遥感器成像模拟耦合模型是主要途径, 能够实现农田多维遥感数据模拟, 为农业定量遥感研究与应用提供模拟数据支持。

Review of Optical Remote Sensing Imaging Simulation of Farmland Radiation Transfer Process

The major methods of optical remote sensing imaging simulation which including optical physics simulation, image synthesis, computer graphics and remote sensing physical model method were introduced and analyzed. In particular, remote sensing physical model method has become main development trends because it can consider the truth of radiative transfer process. The key problems of cropland information time series simulation, the development of farmland radiative transfer models and remote sensing imaging simulation system were further discussed. The result shows that radiative transfer models of leaf, soil, canopy, atmosphere and sensor are integrated with the field observation information, e.g. canopy structure and spectral, to simulate multi-dimension remote sensing data for application requirements in agriculture quantitative remote sensing.