靶标的几何光效应变化模型  

Geometrical and Optical Transformation Mathematical Models of Target

作　　者：黄安祥[1] 潘志[2] 陈宗基[1] 姜南 

机构地区：[1]北京航空航天大学,北京100083 [2]空军工程大学,西安713800 [3]空军第一飞行学院,哈尔滨150001

出　　处：《系统仿真学报》2006年第1期9-11,49,共4页Journal of System Simulation

摘　　要：空战仿真视景具有可见空域大(20公里以上)而靶标小(战机均小于30米)的特点。由于视景环境的解算和显示是数字信号处理机制,当靶标较远时,靶标的图像如超出屏幕显示分辨率显示能力时,出现图像丢失和混叠现象。针对空间立体视景中靶标随距离消失过程过快的问题,提出以几何效果变化模型和光效应变化数学模型替代严格的图像透视变换模型,并对该模型进行了详细的论述和分析。The air combat visual has a characteristic that the eyeable airspace is big （more than 20 kilometers） but target is small （all fighter plane is small in 30 meters）. Because the calculation and display of visual is digital signals, the targets picture may be present to mixing and disappearing, when it is farther and its picture on the screen outrun the display resolution ability. To solve the problem that targets disappear rapidly when ranges increase in three dimension visual environment, an algorithm was raised to replace the rigid image perspective transformation model with geometrical and optical transformation mathematical models and the model was analyzed in detail.

关 键 词：空战仿真 靶标视景 透视变换 光效应 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]