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Algorithm of simulating aerial images

GU Daquan;LIU Gaofei;WANG Jin;WANG lei;College of Meteorology & Oceanography,PLA Univ.of Sci.& Tech.;  
To use the aerial images more efficiently in scenes of battlefield and education,and reduce the cost of real aerial images,algorithms were put forward that applied simulating techniques to creating the aerial images.Simulating aerial images mainly uses visualization techniques to reappear the earth scenes and dynamic cloudscape.Firstly,two absolutely closed data field were generated by improving the random midpoint displacement method.Secondly,a cloud field with a relatively sharp edges and concentrated distribution was generate by using sharpening method to deal with the first data field.Then the cloud field was translated and deformed,and a dynamic changed cloudscape affected by the wind field acquired.The continuous earth image was generated by mapping the second data field.Finally,the simulation of aerial images was realized using the principle of superposition display of the cloudscape and the earth image.The simulation algorithm has been applied on the software of virtual battlefield environment simulation.The result of the simulation can meet the practical requirement of the simulation system.
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