定向干扰跟踪平台的激光扩束系统设计
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摘要
为了解决常规定向干扰系统结构复杂、尺寸过大、难以变倍等问题,本文设计了一种采用反射式离轴光机结构的激光扩束系统,并进一步对激光变倍扩束主、副反射镜组的光机结构进行了设计与分析。分析结果表明,主副镜组最大变形量均小于0.01 mm,扩束机构的基本振型频率为105.2 Hz,最大结构应力小于材料的屈服强度。通过测试,系统能够实现系统扩束比为1∶15.01、1∶19.96、1∶25.03,空间偏移量误差小于1 mrad,满足技术指标要求。
In view of the problems existed in the traditional directional interference system,such as complicated structure,oversize dimension,difficult to zoom and color difference,a laser beam expanding system with the reflective offaxis opto-mechanical structure was designed.The optical-mechanical structure of off-axis double reflectors were designed and analyzed.Analysis results show that the maximum deformation is below 0.01 mm,the frequency of basic vibration was 105.2 Hz,and the maximum stress of the structure is less than yield strength of the material.After testing,the beam expanding ratio obtained is 1∶15.01(19.96,25.03) and the spatial offset errors is below 1 mrad,which meets the requirement of technical index.
In view of the problems existed in the traditional directional interference system,such as complicated structure,oversize dimension,difficult to zoom and color difference,a laser beam expanding system with the reflective offaxis opto-mechanical structure was designed.The optical-mechanical structure of off-axis double reflectors were designed and analyzed.Analysis results show that the maximum deformation is below 0.01 mm,the frequency of basic vibration was 105.2 Hz,and the maximum stress of the structure is less than yield strength of the material.After testing,the beam expanding ratio obtained is 1∶15.01(19.96,25.03) and the spatial offset errors is below 1 mrad,which meets the requirement of technical index.
引文
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[9]WANG Bing,ZHAO Wei,JI Xiang,et al.Influence of target temperature on mid-infrared direction jamming[J].Laser&Infrared,2017,47(4):498-501.(in Chinese)王冰,赵威,冀翔,等.目标温度对中波红外定向干扰效果影响研究[J].激光与红外,2017,47(4):498-501.
[10]WANG Lili,HU Zhongwen,JI Hangxin.Laser spot center location algorithm based on Gaussian fitting[J].Applied Optics,2012,33(5):985-989.(in Chinese)王丽丽,胡中文,季杭馨,基于高斯拟合的激光光斑中心定位算法[J].应用光学,2012,33(5):985-989.
[2]TANG Cong,YIN Songfeng,LING Yongshun,et al.Study on jamming performance of DIRCM[J].Laser&Infrared,2015,45(1):73-78.(in Chinese)唐聪,殷松峰,凌永顺,等.定向红外对抗系统干扰性能研究[J].激光与红外,2015,45(1):73-78.
[3]CHAI Dong,TONG Zhongxiang,LU Yanlong.et al.Simulation and technique of airborne directional laser IR countermeasure system[J].Laser&Infrared,2010,40(9):981-984.(in Chinese)柴栋,童中翔,芦艳龙,等.机载定向激光红外对抗技术及仿真研究[J].激光与红外,2010,40(9):981-984.
[4]WANG Weiqiang,JIA Xiaohong,HAN Yumeng,et al.Infrared imaging modeling and simulation of DIRCM laser[J].Infrared and Laser Engineering,2015,44(3):789-794.(in Chinese)王炜强,贾晓洪,韩宇萌,等.定向干扰激光的红外成像建模与仿真[J].红外与激光工程,2016,45(6):51-56.
[5]LIU Lei,LI Xiao,XU Xiaojun,et al.Direction infrared jamming based on continuous-wave optical parametric oscillator[J].High Power Laser and Partical Beam,2012,24(9):2027-2030.(in Chinese)刘磊,李霄,许晓军,等.连续波光参量振荡器定向红外干扰[J].强激光与离子束,2012,24(9):2027-2030.
[6]YANG Zhao,YAN Gong.New design of beam expanding unit for excimer laser[J].Optics and Lasers in Engineering,2012,50(9):1202-1208.
[7]Benjamin Frey,Udo SGaipl.Radio-immunotherapy:the focused beam expands[J].The Lancet Oncology,2015,16(7)742-743.
[8]HE Binggao,AN Zhiyong,CAO Miao,et al.Opto-mechanical design of beam expander on laser jamming system[J].Acta Photonica Sinica,2014,43(6):168-174.(in Chinese)何秉高,安志勇,曹秒,等.激光干扰扩束系统光机结构设计[J].光子学报,2014,43(6):168-174.
[9]WANG Bing,ZHAO Wei,JI Xiang,et al.Influence of target temperature on mid-infrared direction jamming[J].Laser&Infrared,2017,47(4):498-501.(in Chinese)王冰,赵威,冀翔,等.目标温度对中波红外定向干扰效果影响研究[J].激光与红外,2017,47(4):498-501.
[10]WANG Lili,HU Zhongwen,JI Hangxin.Laser spot center location algorithm based on Gaussian fitting[J].Applied Optics,2012,33(5):985-989.(in Chinese)王丽丽,胡中文,季杭馨,基于高斯拟合的激光光斑中心定位算法[J].应用光学,2012,33(5):985-989.