Modeling and simulation of topographic effects for hyperspectral remote sensing

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.