摘要
时间间隔的测量精度对脉冲激光测距系统的测量精度起决定作用.为此研制了一高精度时间间隔测量模块,该模块基于专用时间数字转换芯片开发,采用延迟线插入法技术,最大测量时间可高达200m s,测时分辨率最高可达125ps,对应测距分辨率18.75mm,适用于远距离的测量.给出了硬件和软件设计方法以及模块的测试结果.
The precision of the pulsed laser ranging system was decided by the precision of the time interval measurement. Therefore, a high resolution time interval measurement module was developed. The module is based on the special time-to-digital conversion chip which adopts the delay line interpolation method. The maximum measuring time of the module is 200ms, and the maximum time resolution is 125ps, of which the corresponding distance resolution is 18.75mm. The module is especially suit for the large distance measurement. The hardware and the software of the module as well as the testing results are also presented.
出处
《红外与毫米波学报》
SCIE
EI
CAS
CSCD
北大核心
2007年第3期213-216,221,共5页
Journal of Infrared and Millimeter Waves
基金
中国科学院创新三期项目(11100404K221JW19)
关键词
脉冲激光测距
时间间隔测量
时间数字转换
延迟线插入法
pulsed laser ranging
time interval measurement
time-to-digital conversion
delay line interpolation method
