摘要近年激光制导技术与激光武器不断发展进步。其中激光偏振制导技术通过激光发射器发射出经调制编码的激光波束的偏振态来确定导弹的方位信息。因为其能克服激光辐射强度空间编码的局限,因此它的应用越来越广泛。在分析偏振光信号的特征参数的基础上,本文介绍检测偏振光的状态常用的静态检测方法。针对激光制导中导弹高速运动设计了偏振光的动态接收和识别系统,主要利用了相位延迟器与差和比的数据处理方式,避免了测量设备和偏振光相对旋转的干扰。重点对偏振光的接收系统中主要元件的原理和功能和工作参数进行了分析,同时通过分析琼斯矩阵得出了旋向、椭圆度和所在位置三者之间的比例关系,通过计算分析表明设计方案在激光光线正照射的条件下可行。33511
关键词 偏振态 动态检测 相位延迟器 琼斯矩阵
毕业论文设计说明书外文摘要
Title Design of the dynamic receiver and the identification system of the polarized light
Abstract
In recent years, laser-guided technology and laser-guided weapons are always developing .In laser polarization guidance technology, the modulated laser-beam sent out by laser emitter carry the message of position in the form of polarization state. Because it can overcome the disadvantage of laser beam energy modulating commonly applied in existing laser beam rider guidance system, its applications become more and more popular. Based on the analysis of the characteristic parameters of the polarized light, a popular identification method only applicable to static detection is introduced in this paper. Dynamic receiver and the identification system of the polarized light is designed for the high-speed motion of missile. By using a particular phase delayer and a special method of data processing we prevent the interference from the rotating angle between the polarized light and the devices. Our research focus on the analysis of the principles and functions of the main components of the system. By analyzing Jones matrix, a proportional relationship among the rotation, ellipse degree and the location is obtained. After calculating and analyzing, we know the design is feasible for the normal incidence light.
Keywords polarization state dynamic detection phases delayer Jones matrix
目录
1 引言 1
1.1 偏振光的定义、分类和产生方法 1
1.2 偏振光检测的国外研究成果 1
1.3 偏振光动态接收和检测的发展 2
1.4 典型偏振光的动态系统的设计 2
1.5 本文的主要工作 2
2 系统的原理和计算 4
2.1 常用的静态偏振光测定方法 6
2.2 动态系统的设计 7
2.3 利用琼斯矩阵的推导 8
2.4 输出电信号的数据处理 9
2.4 本章小结 10
3 系统设计与分析 11
3.1 光源的选择 11
3.2 光电探测器的选择 11
3.3 光线正入射时波片的分析和选择 12
3.4 起偏器的分析与选择 14
3.5 实际接收光学装置系统 17
3.6 系统的误差分析 18
3.7 本章小结 18
结 论 20
致 谢 21
参考文献22
1 引言
激光拥有单色度高、准直性好、高相干性和高能量的优点,它使得导航、制导、远程定位等相关领域得到了长足的发展[1]。其中激光制导的空间偏振编码通过对激光偏振态进行编码携带相应的位置信息来实现制导,激光制导的空间偏振编码则是由调制盘调制激光源后发射的,光束中心对准目标,导弹进入特定宽度的激光光束内部,导弹末尾的接收器收到偏振光并进行识别转换形成修正信号,以此导航[2]。导航全程只要激光驾束中央跟踪对象,导弹便能够实时调整误差。对激光的偏振态的识别决定着导弹的命中率,在这一背景下对偏振光偏振态的动态接收测量的需求大幅增加。 偏振光的动态接收检测系统设计:http://www.751com.cn/tongxin/lunwen_30647.html