基于光流信息的圆弧偏置比例导引规律  

Optical-flow based circle biased proportional navigation

作　　者：覃天[1] 陈万春[1] 邢晓岚[2] 

机构地区：[1]北京航空航天大学宇航学院,北京100191 [2]空军装备研究院总体所,北京100085

出　　处：《北京航空航天大学学报》2011年第2期189-192,共4页Journal of Beijing University of Aeronautics and Astronautics

摘　　要：提出了一种改进的用于被动寻的导弹的基于光流带落角约束的导引规律,其具有更强的适应性和更小的落角误差,而且该导引律不要求弹目距离信息,克服了被动寻的导弹不能测距的约束.基于采用光学传感器和光流算法的测量模型,受昆虫导航的启发,利用光流信息进行被动寻的导弹的导引和控制.同时借鉴偏置比例导引律的结构,重新设计偏置项,实现导弹以期望的落角命中目标.仿真表明,拦截地面运动目标时,该导引律在保证小脱靶量的同时,基本达到期望的落角,对于测量噪声也具有较好的鲁棒性.For the passive homing missiles,a developed guidance law based on optical flow was proposed to impact a moving target with an impact angle constraint.In contrast to optical-flow based circle navigation guidance,it is more practical and precise.Meanwhile the improved one does not require the range information,which avoids the problem that the range information can not be measured directly by a passive homing seeker.Based on a measurement model using an optical sensor and optical flow calculation and inspired by the insect navigation,the optical flow was used in guidance and control for a passive homing missile.Employing the structure of biased proportional navigation,the bias term was redesigned to ensure the impact angle.The simulation results show that,a small miss distance and a desired impact angle are obtained when the new guidance law is used to impact a moving ground target,also this guidance law is much robust to measurement noise.

关 键 词：光流 导弹 导引 

分 类 号：TJ765[兵器科学与技术—武器系统与运用工程]