基于图像仿真的对地遥感过程科学可视化研究

分析了成像链的光谱辐射响应和空间响应特性，提出一种基于图像仿真的对地遥感过程科学可视化方法。文中建立了成像链分析模型，讨论了传感器获取的三维场景像元辐幅度、探测器输出信号、随机噪声和调制传递函数等数学模型，并导出了包含传感器综合响应特性的遥感数字图像传输方程。此外，对专业软件RSIS1．0可见近红外波段的仿真模块、数据库及仿真过程作了简要介绍。最后，给出了部分仿真遥感数字图像。

Study on Scientific Visualization of Earth Remote Sensing Based on Imagery Simulation

Spectral radiometric and spatial response characteristics of image chains are analyzed, and a scientificvisualization method of earth remote sensing process based on imagery simulation is presented. An image chains (IC) model is developed in this paper, and some math models such as pixel-radiance of three dimensional scene acquired by sensor, output signal of detector, random noise and modulation transfer function (MTF) are discussed. Consequently, a remote sensing digital imagery transfer equation involving sensor synthetic response characteristics is derived. Moreover, simulation modules, databases and simulation processes of the professional software RSIS1.0 in the band of visible and near infrared (VNIR) are introduced briefly. Finally, some simulated remote sensing digital images are given.