Laser time-of-flight measurement based on multi-channel time delay estimation
In this paper,a novel method based on multi-channel time delay estimation with linear fitting correction for laser time-of-flight (TOF) measurement is described.The laser TOF measurement system is constructed with a laser source,a stop receiver channel,a reference receiver multi-channel,an ADC sampling unit and a digital signal processing unit.Limited by the sampling rate,the precision of laser TOF measurement is restricted no more than the ADC sampling period in conventional methods.As this problem is considered,multi-channel correlation time delay estimation with linear fitting correction is devised.It is shown that the measuring precision is better than 2ns with multi-channel time delay estimation and not influenced by SNR.The experimental results demonstrate that the proposed method is effective and stable.
Time-of-flight Laser measurement Multi-channel Time delay estimation Cross-correlation Linear fitting correction
Wei Xu Qian Chen Guohua Gu Weiji He
Department of Optical Engineering Nanjing University of Science and Technology Nanjing,Jiangsu Province,China
国内会议
南京
英文
1-4
2012-06-08（万方平台首次上网日期，不代表论文的发表时间）