基于LabVIEW的角分辨空间激光散射测量系统  

Angle Resolution Space Laser Scattering Measurement System Based on LabVIEW

作　　者：王璐璐 高爱华[1] 刘卫国[1] 闫丽荣[1] 陈智利[1] WANG Lu-lum GAO Ai-hua ,LIU Wei-guo ,YAN Li-rong ,CHEN Zhi-li(Xi＇An Technology University Shaanxi Key Laboratory of Thin Film Technology and Optical Testing, Institute of Optoelectronic Engineering, Xi＇an 710021, China)

机构地区：[1]西安工业大学陕西省薄膜技术与光学检测重点实验室,陕西西安710021

出　　处：《光学与光电技术》2018年第3期40-45,共6页Optics & Optoelectronic Technology

基　　金：国防科工局(JCKY2016208A001)资助项目

摘　　要：设计了一种基于虚拟仪器技术的角分辨空间激光散射测量系统。以双向反射分布函数(BRDF)作为理论基础,采用虚拟仪器技术对空间激光散射测量系统进行编程,实现了对测量系统的运动控制,散射光实时采集、处理、显示、数据保存等功能。系统采用相关检测技术进行信号处理,抑制系统背景噪声,以直线型划痕为例进行实验,当入射光投影与划痕在不同夹角时,探测器以光学元件为中心做圆周运动,以测量不同圆周上的散射光,实现双向反射分布函数(BRDF)测量。该系统空间方位角测量范围为0°~360°,角分辨率为0.1°,系统动态范围可达1011量级。测量结果表明该系统具有很好的重复性和稳定性,对实验结果进行分析可得粗划痕散射率大于细划痕,前向散射大于背向散射。In this paper,an angle-resolved space laser scattering measurement system based on virtual instrument technology is designed.Taking bifurcation reflection distribution function（BRDF）as the theoretical basis,the space laser scattering measurement system is programmed by virtual instrument technology to realize the measurement system motion control,scattered light real-time acquisition,processing,display,data storage and other functions.The system uses the relevant detection technology for signal processing,suppression of background noise,linear scratches as an example for the experiment,when the incident light projection and scratch at different angles,the detector to optical components as the center to do circular motion,scattered light is measured on different circles to achieve bidirectional reflectance distribution function（BRDF）measurements.The space azimuth measurement range of the system is 0°~360°,the angular resolution is 0.1°,and the system dynamic range can reach 1011 orders of magnitude.The measurement results show that the system has good repeatability and stability.The analysis of the experimental results show that the coarse scratch scatter rate is greater than the fine scratch,the forward scatter is greater than the back scatter.

关 键 词：虚拟仪器 角分辨空间激光散射 双向反射分布函数 运动控制 数据采集 

分 类 号：TN247[电子电信—物理电子学]