一种新的双频激光多普勒测速方法的实验研究  

A new dual-frequency laser Doppler velocity measurement method

作　　者：张艳艳[1] 霍玉晶[1] 何淑芳[1] 巩轲[1] 

机构地区：[1]清华大学电子工程系,北京100084

出　　处：《激光与红外》2010年第7期694-696,共3页Laser & Infrared

基　　金：航天科技创新基金项目(No.CASC0203)资助

摘　　要：提出了一种新的双频激光多普勒测速方法,利用同偏振的双频激光器作为光源,并用两个线偏振光同时传感物体的速度,可以大大提高最高可测量速度。本文分析这种新方法的原理并进行了实验验证。结果表明,利用这种方法可以实现对高速运动物体速度的高精度测量。A new dual-frequency laser Doppler velocity measurement method is presented in this paper.In this scheme,a parallelly linear-polarized dual-frequency laser incidents on the target and senses the target velocity with both of the frequencies,which can increase the maximum measurable velocity significantly.The theoretical analysis and verification experiment are presented,and the results show that high velocity measurement can be achieved with high precision using this method.

关 键 词：激光多普勒测速 双频激光 高速度 偏振 

分 类 号：TN06[电子电信—物理电子学] TN249