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基于外部时钟信号触发重采样的激光频率调制测距方法

Laser Frequency Modulated Ranging Method Based on Triggering Resample from Outside Clock Signal

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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.

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中图分类号:TN247

DOI:10.3788/aos201939.0428003

所属栏目:遥感与传感器

基金项目:国家自然科学基金(51675380)、光电测试技术北京市重点实验室开放课题(GDKF2015007)

收稿日期:2018-09-03

修改稿日期:2018-11-22

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作者单位    点击查看

张桐:天津大学精密测试技术及仪器国家重点实验室, 天津 300072
曲兴华:天津大学精密测试技术及仪器国家重点实验室, 天津 300072
张福民:天津大学精密测试技术及仪器国家重点实验室, 天津 300072

联系人作者:张福民(zhangfumin@tju.edu.cn)

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引用该论文

Zhang Tong,Qu Xinghua,Zhang Fumin. Laser Frequency Modulated Ranging Method Based on Triggering Resample from Outside Clock Signal[J]. Acta Optica Sinica, 2019, 39(4): 0428003

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

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