在商业ECL下,在DSCM系统中使用维纳波器进行高保真性和自适应性前置相位式振动传感,使用商业ECL中的维纳波器
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|January 16, 2025
概括
一种新的维纳波器 (WF) 方法增强了连贯数字子载波复杂化系统中的振动传感. 这种自适应技术可以提高信号与噪声的比率,并检测到各种类型的振动,而无需事先的知识.
科学领域:
- 光学通信是指光学通信.
- 信号处理 信号处理
- 传感器技术 传感器技术
背景情况:
- 商业连贯数字子载波复杂化 (DSCM) 系统使用频域试点音调 (FPT) 进行关键功能,如频率偏移估计 (FOE) 和载波阶段估计 (CPE).
- 从这些系统中提取振动诱导的相位信息对于传感应用至关重要,但通常受到背景噪声,特别是激光相位噪声的限制.
研究的目的:
- 提出和验证一种高保真性和适应性前置相位式振动传感技术.
- 通过有效抑制背景噪声来改善传感信号噪声比率 (SSNR).
- 展示拟议方法对各种振动波形的自适应检测能力.
主要方法:
- 在DSCM系统中,Wiener过器 (WF) 应用于从载体相估计 (CPE) 模块中获得的相位信息.
- 基于WF的相提取与传统带通波器 (BPF) 方法进行了比较.
- 实验验证是使用正弦波,振幅调制连续波 (AMCW) 和频率调制连续波 (FMCW) 振动进行的.
主要成果:
- WF方法显著抑制来自激光相位噪声的传感背景噪声,优于传统的BPF方法.
- 使用WF方法与BPF方法相比,使用WF方法检测10kHz正弦振动时,SSNR得到了8dB的改进.
- 通过WF方法,证明了对AMCW和FMCW振动的自适应检测,而不需要预先了解它们的频率或波形.
结论:
- 拟议的基于WF的振动传感在DSCM系统中提供了高保真性和适应性.
- 这种方法为相提取提供了一种优越的方法,增强SSNR,并使多功能振动检测成为可能.
- WF技术为先进的光学传感应用提供了强大的解决方案.
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