以半导体激光器线性频率调制为基础的距离测量  

Distance measurement using a linear frequency modulation diode laser

作　　者：吴义芳[1] 

机构地区：[1]北京大学电子学系

出　　处：《激光技术》1999年第2期113-115,共3页Laser Technology

摘　　要：给出一种以频率调制连续波（ＦＭＣＷ）技术为基础的进行无接触、无累加误差和较大动态范围距离测量方法。由可调谐半导体激光器产生一个啁啾信号，通过测量拍信号频率计算距离。用商用ＧａＡｌＡｓ激光器组成的测量系统的动态范围为１ｍ，测距精度达１０－３。Based on linear frequency modulation continuous wave (FMCW) technique,we have developed a distance measurement method for non contact and non integrating error measurement.A tunable GaAlAs diode laser is used as a chirp signal source,the distance is detected by calculating the beat frequency.The dynamic range of the system is about 1m,and the measurement accuracy of 10 -3 is obtained.

关 键 词：频率调制连续波 啁啾信号 半导体激光器 

分 类 号：TN248.409[电子电信—物理电子学]