自适应除噪技术在激光准直中的应用研究  

Study on the Application of Adaptive Noise Cancelling Technique in Laser Alignment

作　　者：杨友堂[1] 曾理江[1] 殷纯永[1] 

机构地区：[1]清华大学精密仪器系

出　　处：《仪器仪表学报》1995年第4期370-374,共5页Chinese Journal of Scientific Instrument

摘　　要：本文根据激光在大气中传播特性的理论，提出了多点监测，综合补偿的准直方法。根据现场采集的数据，用多元逐步回归方法建立适合于当时当地环境的模型。并用自适应除噪技术对激光束漂移、光线弯曲和随机抖动进行了综合修正。修正后光束稳定性误差减小２０％～８０％，１０米内剩余误差在１０μｍ／小时以内。A new method compensating the beam shift,beam bend,and randomturbulence simultaneously is presented,which is based on the properties of laser propagationin atmosphere。In this method,multiple regression and adaptive noise cancelling techniqueare used.sampling data in site made the method flexible and adaptable to variety of cirocum- stances. The short and long distance experiments show that this method can raisc the Precision ofalignment 20% 80%in different conditions,the accuracy of 10 μm/hour has been reachdwithin 10 meter。

关 键 词：自适应除噪技术 激光准直 激光仪器 应用 

分 类 号：TH744.5[机械工程—光学工程]