大气湍流对激光半主动制导精度的影响  

Influence of atmospheric turbulence on the accuracy of semi-active laser guidance

作　　者：叶顺流[1,2] 朱少岚[1] 孙启兵[1,2] 阎德科[1,2] 

机构地区：[1]中国科学院西安光学精密机械研究所,陕西西安710119 [2]中国科学院研究生院,北京100039

出　　处：《激光与红外》2010年第6期628-631,共4页Laser & Infrared

摘　　要：根据强度起伏导致的对数振幅方差和相位起伏导致的到达角方差,计算出由大气湍流引起的激光半主动制导跟踪系统的角误差,并通过专用软件仿真了大气湍流引起的角误差对激光半主动制导瞄准精度的影响。计算和仿真结果表明:大气湍流引起的跟踪误差可达几十微弧度,导致制导系统的瞄准精度下降10%左右。Angle-tracking errors of semi-active laser guidance caused by atmospheric turbulence were calculated according to log-amplitude variance induced by intensity fluctuation and angle-of-arrival variance induced by phase fluctuation, and influences on pointing accuracy of semi-active laser guidance caused by the angle-tracking errors were simulated by using special software. Calculation and simulation results show that the tracking errors induced by atmospheric turbulence reach dozens of micro-radians, and result in the pointing accuracy of the guided system dropping by 10% or so.

关 键 词：激光半主动制导 强度起伏 相位起伏 跟踪误差 瞄准精度 

分 类 号：TN977[电子电信—信号与信息处理]