High-precision long distance measurement based on broad spectrum interferometry using a femtosecond laser

IF 2.7 3区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Measurement Science and Technology Pub Date : 2024-07-02 DOI:10.1088/1361-6501/ad5ddb

Haoran Gao, Lei Huang, Xin Xu, Dagui Wang, Pengxiang Ge, Huining Zhao

引用次数: 0

Abstract

The method based on broad spectrum interference using femtosecond pulses is an important ranging method. In this paper, we experimentally evaluate the effect of interferometric spectral bandwidth used for calculation on the ranging results, and precision can be improved by choosing the optimal spectral bandwidth. In addition, in order to eliminate the influence of interferometric spectral fluctuations on the measurement results, we introduce the detrend algorithm into the processing algorithm and compare the measurement results before and after the algorithm improvement. Then, four kinds of nominal distance were measured and the contribution of the relevant factors to the measurement uncertainty is evaluated. Finally, the synthetic standard uncertainty of measurement results was 0.02 μm, 0.10 μm, 1.05 μm and 2.78 μm for nominal distance of ~0 m, ~1.5 m, ~16.5 m and ~43.5 m respectively.

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基于飞秒激光宽光谱干涉仪的高精度长距离测量技术

基于飞秒脉冲宽光谱干涉的方法是一种重要的测距方法。本文通过实验评估了用于计算的干涉光谱带宽对测距结果的影响，并通过选择最佳光谱带宽来提高精度。此外，为了消除干涉光谱波动对测量结果的影响，我们在处理算法中引入了去趋势算法，并比较了算法改进前后的测量结果。然后，测量了四种标称距离，评估了相关因素对测量不确定度的贡献。最后，对于 ~0 m、 ~1.5 m、 ~16.5 m 和 ~43.5 m 的标称距离，测量结果的合成标准不确定度分别为 0.02 μm、0.10 μm、1.05 μm 和 2.78 μm。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Measurement Science and Technology 工程技术-工程：综合

CiteScore

4.30

自引率

16.70%

发文量

656

审稿时长

4.9 months

期刊介绍： Measurement Science and Technology publishes articles on new measurement techniques and associated instrumentation. Papers that describe experiments must represent an advance in measurement science or measurement technique rather than the application of established experimental technique. Bearing in mind the multidisciplinary nature of the journal, authors must provide an introduction to their work that makes clear the novelty, significance, broader relevance of their work in a measurement context and relevance to the readership of Measurement Science and Technology. All submitted articles should contain consideration of the uncertainty, precision and/or accuracy of the measurements presented. Subject coverage includes the theory, practice and application of measurement in physics, chemistry, engineering and the environmental and life sciences from inception to commercial exploitation. Publications in the journal should emphasize the novelty of reported methods, characterize them and demonstrate their performance using examples or applications.