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Entire Chains Simulation System for Optical Remote Sensing Imaging

The optical remote sensing imaging simulation plays vital roles in the improvement of imaging system design and the evaluation of image processing algorithms. By combing quantitative radiation and computer graphics, an entire chains simulation system is designed for optical remote sensing. Analyzing the imaging process, physical models for entire image chains are built, including BRDF model, radiative transfer model, imaging system model and platform model. Based on scene data measurement, physical properties correlation and scene management, a three-dimensional (3D) digital scene is constructed. The simulation software is developed on the basis of image chains models. A material spectral database and an atmospheric parameter database compose the database system together. The software is divided into three modules: visibility calculation module, radiance calculation module and imaging module. The simulation images for different solar zenith angles and observing zenith angles are obtained. The results prove the accuracy of the simulation models and software.