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从点源冷原子惯性传感器中的空间干扰边缘增强读取
Jing Wang1, Junze Tong1, Wenbin Xie1
1Key Laboratory of Quantum Precision Measurement of Zhejiang Province, College of Science, Zhejiang University of Technology, Hangzhou 310023, China.
Sensors (Basel, Switzerland)
|June 10, 2023
概括
这项研究通过使用主要成分分析来提高干扰模式清晰度来增强冷原子干扰仪中的角速度测量. 这种方法显著提高了测量精度,有助于旋转传感应用.
科学领域:
- 原子,分子和光学物理学
- 量子计量学 量子计量学
背景情况:
- 冷原子干扰仪在初始原子云大小微不足道时对旋转敏感.
- 垂直原子喷泉干扰仪可以测量引力加速度和角速度.
- 精确的角速度测量依赖于精确的相位和频率从干扰模式中提取,这些干扰模式通常受到噪音和系统偏差的阻碍.
研究的目的:
- 为了提高冷原子干扰仪的角度速度测量的精度和准确性.
- 开发一种提高从空间干扰模式中提取频率和相位的技术.
- 为了减轻影响旋转测量的系统偏差和噪声.
主要方法:
- 将干扰仪近似为点源干扰仪,用于旋转灵敏度.
- 使用一个垂直的原子喷泉干扰仪设置.
- 将基于主要组件分析 (PCA) 的预装工艺应用于原始图像数据.
- 分析频率和相提取的空间干扰模式.
主要成果:
- 主要组件分析预装过程提高了干扰模式对比度7-12dB.
- 用应用的技术,角速度测量的精度从6.3μrad/s提高到3.3μrad/s.
- 对旋转运动的测量精度显著提高.
结论:
- 主成分分析是一种有效的预处理技术,用于改善冷原子干扰仪的角度速度测量.
- 提高精度对于各种科学仪器中敏感的旋转检测至关重要.
- 这种方法为依赖空间干扰模式分析的系统提供了更准确的测量途径.
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