Research On Simulation Of Photoelectric Stabilized Sighting Imaging On Moving Carrier Platform

As an important research direction of the simulation technology,the 3D scene simulation has been used widely in many field of military and civil use,such as the performance evaluation of photoelectric imaging systems,the military simulation training,and the design and development for guided weapons.On the other hand,with the development of software and hardware technology,and the enhance of the application demand,the 3D scene simulation has a big enhancement in the physical reality and application fields,it could meet the simulation requirement for many complex photoelectric imaging systems from the engineering.This paper takes a certain type of two-axis and two-frame airborne photoelectric stabilized sighting system as the research object,achieved the function of target tracking and line-of-sight stability of the airborne photoelectric stabilized sighting system by the Simulink which is a system simulation software,and achieved the dynamical simulation of the motion-blurred and destabilization-blurred by the dynamic blurred-image simulation software which is finished in this paper,moreover,this paper also evaluated the performance of the photoelectric stabilized sighting system which we simulated,by the analysis of blurred image.The main work includes:1.Introduced the basic structure and working principle of photoelectric stabilized sighting system and illustrated the angular isolation characteristic of photoelectric stabilized sighting system by the mathematic model.On the basis mentioned above,built the simulation model of a certain type of two-axis and two-frame airborne photoelectric stabilized sighting system by the Simulink.2.For the key problem that the degradation of image quality as a result of image motion,this paper expounded the mechanism of image degradation,and derived the mathematical formula of image motion value.Then,according to the different form of the aircraft motion and disturbance,built many kinds of imaging degradation models.3.Basis on the simulation model of the airborne photoelectric stabilized sighting system,this paper achieved the function of target tracking and line-of-sight stability in the medium wave infrared scene which was built by the 3D graphics rendering engine OGRE;Basis on the motion-blurred and destabilization-blurred imaging degradation models and using the OGRE compositor,this paper finished the blurring effect dynamical simulation of imaging system.On the basis mentioned above,this paper finished the dynamic blurred-image simulation software.4.With the analysis for the output image of imaging system under different conditions,this paper illustrated the key factors which influence the image quality,and evaluated the performance of the photoelectric stabilized sighting system.