摘要
激光多普勒测速以其高精度、使用方便而在速度测试领域得到广泛的应用. 本文介绍了激光多普勒测速和双光束测速系统的基本原理,并对流体速度进行了测量,得出了相应的实验结果.
Laser Doppler velocity is widely used in the measurement field of velocity for its high accuracy and easy-used property. This paper studies the principle of laser Doppler velocity and the twin-beam system. The measurement of fluid velocity has been carried out with the twin-beam laser Doppler velocity system. The experimental results are presented.
出处
《物理实验》
2005年第3期44-47,共4页
Physics Experimentation
基金
南开大学第二届本科生创新科研"百项工程"立项项目
关键词
流速测量
多普勒效应
拍频
干涉
傅里叶变换
flow velocity measurement
Doppler effect
beat frequency
interference
Fourier transform
