光学学报, 2019, 39 (4): 0428003, 网络出版: 2019-05-10
基于外部时钟信号触发重采样的激光频率调制测距方法 下载: 933次
Laser Frequency Modulated Ranging Method Based on Triggering Resample from Outside Clock Signal
遥感 激光雷达 线性调频测距 激光干涉 非线性调频 remote sensing laser radar linear frequency modulated ranging laser interferometry non-linear frequency modulation
摘要
对调频连续波激光测距技术进行改进,提出了触发重采样方法。在所提方法中,辅助信号先触发采集卡,然后对测量信号和辅助信号同时采样,再用采集到的辅助信号的极值点对测量信号进行重采样。实验结果表明:所提出的触发重采样方法的测量标准差最小可达到12 μm。
Abstract
We propose a triggering resample method by improving frequency modulated continuous wave laser ranging technology. In our method, the auxiliary signal triggers the data acquisition card to sample both of the measurement signal and the auxiliary signal, and then, the extreme points of the acquired auxiliary signal are used to re-sample the measurement signal. The experimental results show that the minimum standard deviation of the proposed triggering resample method can reach 12 μm.
张桐, 曲兴华, 张福民. 基于外部时钟信号触发重采样的激光频率调制测距方法[J]. 光学学报, 2019, 39(4): 0428003. Tong Zhang, Xinghua Qu, Fumin Zhang. Laser Frequency Modulated Ranging Method Based on Triggering Resample from Outside Clock Signal[J]. Acta Optica Sinica, 2019, 39(4): 0428003.