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

计量
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出版历程
- 录用日期: 2022-11-15
- 网络出版日期: 2022-11-17

Reviews of the Research Progresses in the Dual-Comb Absolute Ranging in 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。本文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。
- 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: At present, incremental laser interferometer is widely used as the measurement standard of measurement value transfer in large scale measurement. It is easy to lose light in the measurement process, which seriously limits the measurement flexibility. The transmitted measurement standard is prone to light interruption during the measurement process, which severely limits the measurement flexibility. Recently, high-precision absolute ranging methods using femtosecond optical frequency combs as light sources have been rapidly developed, especially the dual-comb asynchronous optical sampling absolute ranging method, which uses two femtosecond optical frequency combs with slight repetition frequency difference. Absolute distance measurement with long range, high accuracy, and high update rate can be achieved. This paper takes the large-scale laser absolute ranging and femtosecond optical frequency comb absolute ranging as the starting point and summarizes the current research progress of large-scale dual-optical comb absolute ranging in detail. To break the ranging bottleneck, the research on the construction and optimization of dual-comb sources, ranging accuracy optimization, ranging system design, and ranging performance verification is investigated. Finally, the future directions for applications of dual-comb absolute ranging are presented.
- 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. Schematic of 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 with asynchronous optical sampling by 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. Detection methods and measurement dead zone of 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. Systematic scheme of 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. Diagram of all-fiber large-scale absolute distance measurement platform

下载: 全尺寸图片幻灯片

图 6 多路绝对测距拓展模块

Figure 6. Extension module for multichannel 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. The online software 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. Software adopted linear detection of spectral phase method algorithm flow

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. Property test of 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. Two measurements results of 5-m interval in the range of 15～60 m

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 large-scale absolute length measurement methods

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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