光学导引系统的建模与仿真

在整个定点着舰过程中,飞机着舰下滑阶段的操纵难度和危险系数都是最高的,如何解决光学导引仿真中模型的准确度和视景特效的逼真度。是定点着舰仿真应用的重中之重。为了解决上述问题,根据光学导引秉统成像原理以及飞机、舰之间的几何关系,实时计算光学下滑道,建立了仿真平台的数学模型,并给出了状态方程。在基于VP平台的视景系统中,采用“立体光面”和动态缩放光晕的方法建立菲涅尔助降灯阵和迎角指示器的模型,保证了模拟着舰过程中飞行员视觉的逼真度。以美F-16飞机模型,进行了多次计算机仿真着舰,试验数据表明：在理想条件下光学导引仿真平台模型正确可信,飞行员着舰质量明显提高,能够起到导引着舰的作用。

The modeling and simulation of optical, guidance system

In the process of the fly＇s fixed landing process,the operation difficulty and danger coefficient are both high during the period of the fly＇s carrier landing and gliding.How to solve the problems of the degree of accuracy in the simulation model and the fidelity in visual specific effect is a big concern in the emulational application of fixed landing process.In order to solve the above problems,a mathematical model of emulational optical guidance platform is built according to optical guidance system image--forming principle and the geometrical relationship and real time computation.Also,the state equations are given. In the VP platform based visual system,the pilot＇s visual fidelity is ensured in the emulational landing process by the establishment of feineer and angle of an attack indicator model with the method of 3D glaze and moving scaling glow.Computer emulational landing is tested many times by the US F-16 model.The test data shows that optical guidance model is correct and creditable in an ideal condition.Pilot＇s landing quality is obviously enhanced.It can play a part in leading landing.