To Improve the Accuracy of Laser Pulse Range Finding by Time Scale-Up  

用时间比例放大技术提高脉冲激光测距的精度(英文)

作　　者：殷聪[1] 韩绍坤[1] 刘巽亮[1] 张化朋[1] 赵跃进[1] 

机构地区：[1]北京理工大学光电工程系,北京100081

出　　处：《Journal of Beijing Institute of Technology》2002年第3期259-262,共4页北京理工大学学报（英文版）

摘　　要：A method of improving the accuracy of laser pulse range finding from ±10 m to ±1 m inexpensively by means of time scale up is described. Time scale up can stretch the entire flight time by a factor of 1 000 and then the stretched result is counted to calculate the distance. The use of this technique decreases the resolution of counting from nanosecond to microsecond, therefore a separate counting oscillator followed by an interpolation operation is unnecessary. This technique can improve the accuracy of laser pulse range finding inexpensively and effectively.介绍了利用时间比例放大技术以低成本把脉冲激光测距精度提高到± 1m的方法 .利用时间比例放大法可以把激光脉冲往返于测程之间的时间按比例放大 1 0 0 0倍 ,放大后的结果用于计算被测距离 .这种方法把测距系统的计时精度从纳秒级降低到微秒级 ,从而降低了对系统时钟分辨率的要求 .采用时间比例放大技术可以有效地提高激光脉冲测距的精度 ,而且使测距系统成本低 。

关 键 词：time scale  up range finding CAPACITOR charging and discharging 

分 类 号：TN247[电子电信—物理电子学]