气动光学传输效应对星图影响的仿真研究  

Study and simulation of aero-optical transmission effects on the star image

作　　者：詹巧林[1] 王宏力[1] 陆敬辉[1] 文涛[1] 

机构地区：[1]第二炮兵工程学院304教研室

出　　处：《电子设计工程》2011年第20期68-71,共4页Electronic Design Engineering

摘　　要：以星光导航在高超飞行器中的应用研究为背景,介绍了高超飞行器周围流场数值模拟方法;将湍流流场分为平均流场和脉动流场两部分,假定星敏感器开窗位置在机身圆筒部位,将恒星视作"点目标",应用几何光学法、物理光学法和统计光学法计算星光在飞行器周围流场中的气动光学传输效应;定性地描述了像模糊、像偏移和像抖动对星图的影响,通过仿真比较了不同波长、不同入射角下湍流流场对星敏感器成像的影响。Based on the study of applying celestial navigation on the hypersonic vehicle, a method on numerical simulation of the flow fields around the vehicle was introduced. The turbulent flow field was divided in to average flow field and fluctuating flow field and the star sensor was assumed fixing in the cylinder position of the vehicle. The star object was regarded as point object and the aero-optieal transmission effects was calculated using the geometrical optics approach, Fourier optics and statistics optics. The influence of the blurring and shifting on the star image was described. The influences of turbulent flow field caused respectively by different wave lengths and incidence angles were compored through simulation.

关 键 词：气动光学效应 星敏感器 星图畸变 点扩散函数 

分 类 号：TJ765[兵器科学与技术—武器系统与运用工程]