论文部分内容阅读
在采用数字图像注入方法对红外成像跟踪搜索系统或红外预警系统进行仿真试验中,红外动态场景仿真是仿真系统的核心技术,而光学系统效应仿真是红外动态场景仿真中的重要部分。由于仿真对象为非相干红外成像系统,光学系统效应可以只考虑其能量域内成像效应和像弥散或能量分散效应。光学系统质量一般用调制传递函数描述,可由调制传递函数计算点扩展函数,并建立基于点扩展函数的光学系统效应模型。只要调制传递函数给定准确,此方法建立的光学系统效应仿真模型的逼真度便有保证,而调制传递函数可以通过普通的光学系统测试方法获得。
In the simulation experiment of infrared imaging tracking search system or infrared early warning system using digital image injection method, infrared dynamic scene simulation is the core technology of the simulation system, and the optical system effect simulation is an important part of the infrared dynamic scene simulation. Since the simulation object is a non-coherent infrared imaging system, the optical system effect can only consider the imaging effect in its energy domain and the image dispersion or energy dispersion effect. The optical system quality is generally described by the modulation transfer function, the point spread function can be calculated by the modulation transfer function, and the optical system effect model based on the point spread function can be established. As long as the modulation transfer function is given accurately, the fidelity of the simulation model of the optical system effect established by this method is guaranteed, and the modulation transfer function can be obtained by the ordinary optical system testing method.