高温湍流场对激光测量的影响  

Effect of Turbulence on Laser Measurement in High Temperature Environment

作　　者：张铫[1] 刘铁根[1] 李宝强[1] 赵刚[2] 

机构地区：[1]天津大学光学工程教育部重点实验室,天津300072 [2]北京理工大学信息学院,北京100081

出　　处：《宇航计测技术》2008年第4期19-22,共4页Journal of Astronautic Metrology and Measurement

摘　　要：在应用机器视觉技术与激光技术实现高温环境玻璃板厚度检测的过程中,分析了高温气体湍流条件下激光传输光线起伏效应以及光线起伏对激光测量系统性能的影响。利用FLUENT软件,应用流体动力学理论和方法模拟高温环境中激光传输路径内气流的流动,对各种气流组织形式下激光传输过程中的流场、温度场的数值模拟结果进行分析比较,优化仪器设计。The traditional Rytov method and Markov approximation method are summarized in the weakly turbulent atmosphere and strong or saturated one, respectively. The observed intensity fluctuation caused by atmospheric turbulence is studied, and the effect of the intensity fluctuation on the performance of atmospheric laser measurement is analyzed. The thesis use FLUENT software, based on the Fluid Dynamics theoretically analysis of physical and mathematical model, According to the distribution rule of air temperature and air refractive index, the design of apparatus is optimized.

关 键 词：湍流 高温 激光测量 

分 类 号：TN247[电子电信—物理电子学]