激光半主动制导中光斑对四象限探测器定位精度影响分析  

Analysis of the Influence of Spots on Positioning Accuracy of Four-quadrant Detector in the Laser Semi-active Guidance

作　　者：仲启媛 刘峰 曹纹诚 冯梦豪 ZHONG Qiyuan;LIU Feng;CAO Wencheng;FENG Menghao(Rocket Force University of Engineering,Xi’an 710025,Shaanxi)

机构地区：[1]火箭军工程大学,陕西西安710025

出　　处：《火箭军工程大学学报》2024年第4期61-67,共7页Journal of Rocket Force University of Engineering

摘　　要：针对激光半主动制导中,光斑的实际位置、大小及能量分布等因素影响探测器定位精度的问题,基于四象限探测器的光斑位置检测原理,建立了探测器检测位置与光斑实际位置的关系模型,在控制背景光为定值的条件下,通过弹目距离的变化改变光斑半径,仿真了激光传输距离和导引头光学系统焦距与定位误差之间的关系。仿真结果表明:激光远场传输条件下距离变化所引起的定位误差变化缓慢;在弹目距离一定时,短焦条件下焦距变化所引起的定位误差小于长焦条件下的焦距变化,且短焦条件下光斑的误差更容易控制在允许范围内。To solve the problem that in laser semi-active guidance,the positioning accuracy of the detector is affected by the actual position,the size and the energy distribution of the spot,a relationship model about the detecting position of the detector and the actual position of the spot was established based on the principle of four-quadrant detector spot position detection.Under the condition of controlled constant background light,the relationship between laser transmission distance,focal length of the guidance head’s optical system,and positioning error was simulated with various spot radius changed by missile-target distances.Simulation results revealed that under laser far-field transmission conditions,changes in distance result in gradual variations in positioning error.When the missile-target distance is fixed,focal length variations cause smaller positioning errors under short-focus conditions compared to long-focus conditions.Furthermore,under short-focus conditions,it is easier to control the spot error within the allowable range.

关 键 词：激光半主动制导 四象限探测器 高斯光斑 定位精度 

分 类 号：TJ410[兵器科学与技术—火炮、自动武器与弹药工程]