大尺寸计量中双光梳绝对测距方法的研究进展

刘洋; 李建双; 赫明钊; 曹士英; 缪东晶; 谢志奇

doi:10.12338/j.issn.2096-9015.2022.0245

大尺寸计量中双光梳绝对测距方法的研究进展

doi: 10.12338/j.issn.2096-9015.2022.0245

刘洋^1,,
李建双^1, ,,
赫明钊¹,
曹士英¹,
缪东晶¹,
谢志奇^{1, 2}

1.
中国计量科学研究院，北京 100029
2.
中国计量大学，杭州 310018

基金项目: 国家重点研发计划（2021YFF0600305, 2020YFB2010703）；中国计量科学研究院基础科研业务费（AKYZD2212, AKY1902）。

详细信息

作者简介:
刘洋（1991-），中国计量科学研究院助理研究员，研究方向：绝对长度计量，邮箱：liuyang1@nim.ac.cn

通讯作者:
李建双（1966-），中国计量科学研究院研究员，研究方向：大尺寸计量，邮箱：lijiansh@nim.ac.cn

中图分类号: TB921
计量
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出版历程
- 收稿日期: 2022-10-13
- 录用日期: 2022-11-15
- 修回日期: 2022-11-15
- 网络出版日期: 2022-11-17

Progress in Dual-Comb Absolute Ranging Methods for Large-Scale Metrology

1.
National Institute of Metrology, Beijing 100029, China
2.
China Jiliang University, Hangzhou 310018, China

摘要

摘要: 大尺寸计量中广泛采用增量式激光干涉仪作为量值传递的计量标准，在测量过程中易发生断光影响，严重限制测量灵活性。近年来，以飞秒光学频率梳为光源的高精度绝对测距方法得到了迅猛发展，特别是双光梳异步光学采样绝对测距方法，利用具有微弱重频差的两台飞秒光学频率梳能够实现大量程、高精度和高更新率的绝对距离测量。以大尺寸激光绝对测距和飞秒光学频率梳绝对测距为切入点，详细综述了现阶段大尺寸双光梳绝对测距的研究进展；针对大尺寸计量场景分析了双光梳绝对测距现存的瓶颈，并对此开展了双光梳光源搭建与优化、测距精度优化、测距系统设计和测距性能验证等深入研究，最后对双光梳绝对测距在大尺寸计量中未来的应用方向提出了展望。
- 计量学 /
- 大尺寸计量 /
- 长度计量 /
- 双光梳系统 /
- 绝对测距 /
- 可溯源长度标准
Abstract: The use of incremental laser interferometers as measurement standards in large-scale metrology is common, but these can easily result in interrupted light during the measurement process, significantly limiting the flexibility of measurements. Recently, high-precision absolute ranging methods using femtosecond optical frequency combs as light sources have rapidly advanced. In particular, the dual-comb asynchronous optical sampling absolute ranging method, which employs two femtosecond optical frequency combs with slight repetition frequency differences, facilitates absolute distance measurements over long ranges, with high accuracy and high update rates. This paper provides a detailed summary of the current progress in large-scale dual-optical comb absolute ranging, beginning with a review of large-scale laser absolute ranging and femtosecond optical frequency comb absolute ranging. To overcome existing limitations in large-scale metrology, we conducted in-depth research on the construction and optimization of dual-comb sources, the optimization of ranging accuracy, the design of ranging systems, and the verification of ranging performance. Lastly, we present future directions for the application of dual-comb absolute ranging in large-scale metrology.
- metrology /
- large-scale measurement /
- length measurement /
- dual-comb system /
- absolute distance measurement /
- traceable length standard

HTML全文

图 1 双光梳绝对测距光路结构

Figure 1. Optical layout of the dual-comb ranging system

下载: 全尺寸图片幻灯片

图 2 双光梳异步光学采样线性探测原理

Figure 2. Principle of linear detection via asynchronous optical sampling in a dual-comb system

下载: 全尺寸图片幻灯片

图 3 双光梳测距的探测方法与测量盲区示意图

Figure 3. Schematic of detection methods and measurement blind zones in a dual-comb system

下载: 全尺寸图片幻灯片

图 4 双色双光梳光源系统

Figure 4. Schematic of a two-color dual-comb system

下载: 全尺寸图片幻灯片

图 5 大尺寸全光纤双光梳绝对测距装置

Figure 5. Schematic of an all-fiber, large-scale dual-comb absolute distance measurement system

下载: 全尺寸图片幻灯片

图 6 多路绝对测距拓展模块

Figure 6. Schematic of the extension module for multi-channel absolute distance measurement

下载: 全尺寸图片幻灯片

图 7 大尺寸双光梳异步光学采样绝对测距在线解算软件

Figure 7. Online software interface for large-scale asynchronous optical sampling absolute distance measurement

下载: 全尺寸图片幻灯片

图 8 软件采用的线性探测的频谱相位法算法流程

Figure 8. Flowchart of the algorithm for linear spectral phase detection adopted in the software

下载: 全尺寸图片幻灯片

图 9 多路绝对距离比对的测试现场图片

Figure 9. Scene of the property test for multiple absolute distance measurements

下载: 全尺寸图片幻灯片

图 10 15～60 m范围内5 m步进间隔的两组测量结果

Figure 10. Results of two measurement sets at 5-m intervals within a 15 to 60 m range

下载: 全尺寸图片幻灯片

表 1 大尺寸绝对长度测量方法的优劣势对比

Table 1. Comparison of advantages and disadvantages of different methods for large-scale absolute length measurement

绝对测距方法	优势	局限
脉冲飞行时间法	可无合作目标测量，应用广泛	受限脉冲计时精度，时间抖动影响明显
调制波相位法	结构紧凑，灵活性较好	受到探测单元的电学带宽和测相精度限制
多波长法	量程大，精度高	构建逐级合成波长链导致测距系统复杂
调频连续波法	动态范围大，可无合作目标测量	光频率扫描非线性将影响测长精度

下载: 导出CSV

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