高光谱遥感地形影响建模与仿真

王亚超; 赵慧洁; 贾国瑞

高光谱遥感地形影响建模与仿真

北京航空航天大学仪器科学与光电工程学院, 北京 100191

基金项目: 国家高技术研究发展计划(863计划)资助项目(2008AA121102); 长江学者和创新团队发展计划资助项目(IRT0705)

详细信息

作者简介:
王亚超(1985-),男,河南汝州人,硕士生,yachao2008@gmail.com.

中图分类号: TP 732
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- 被引次数: 0
出版历程
- 收稿日期: 2009-07-23
- 网络出版日期: 2010-09-30

Modeling and simulation of topographic effects for hyperspectral remote sensing

School of Instrument Science and Opto-electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 针对地形起伏对高光谱遥感图像几何变形和辐射变化的影响,建立高光谱遥感地形影响模型.该模型利用传感器位置、姿态和视场角建立模拟图像像元坐标和地面空间坐标之间的成像几何关系,利用地表反射率、数字高程模型等数据,考虑大气辐射传输过程,计算起伏地形下传感器入瞳辐亮度图像,并经过空间分辨率转换,生成最终遥感模拟图像,实现高光谱遥感地形影响精确建模.利用西藏驱龙地区Hyperion数据和其它相关数据进行仿真分析,将模拟图像和原始图像进行对比,结果比较吻合,表明该模型具有较好的模拟效果.
- 高光谱遥感 /
- 成像仿真 /
- 地形影响 /
- 辐射传输
Abstract: Aiming at geometric deformations and radiation changes caused by rugged terrain for the hyperspectral remote sensing images, a model of topographic effects for hyperspectral remote sensing was proposed. In the model, the imaging geometry relationship between simulation image pixel coordinates and ground space coordinates was established by using the sensor-s position, attitude and field of view. With the surface reflectivity, the digital elevation model(DEM) and the atmospheric radiation transfer model, the radiance image at sensor entrance slit in rugged terrain was calculated. After spatial resolution conversion the simulated remote sensing image was generated. Accurate modeling of topographic effects for hyperspectral remote sensing was achieved. Simulation was implemented to Hyperion data and other relevant data in Qulong, Tibetan. The simulation radiance image and the original radiance image show high consistent, which indicates that the fine simulation results are obtained by the proposed model.
- hyperspectral remote sensing /
- image simulation /
- topographic effect /
- radiative transfer

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