激光多普勒测振仪
光学
解调
多普勒效应
外差(诗歌)
希尔伯特变换
激光扫描测振法
外差探测
激光多普勒测速
相(物质)
激光器
相位噪声
傅里叶变换
相位调制
计算机科学
物理
声学
电信
光谱密度
激光束
频道(广播)
内科学
血流
医学
量子力学
天文
作者
W. Ke,Lijing Li,Longbiao He,Ping Yang,Feng Niu,Kyuho Han,Ronghua Fan,Hanyi Zhang,Xiujuan Feng
出处
期刊:Optics Letters
[Optica Publishing Group]
日期:2024-12-09
卷期号:50 (2): 507-507
摘要
A parallel Hilbert transform arctangent phase demodulation (PHT-ATAN) method based on overlapping computation is proposed for phase demodulation of laser heterodyne Doppler vibrometers. The method suppresses the end point effects by utilizing overlapping computation and data concatenation and accelerates phase demodulation through parallel processing. Simulation and experimental results demonstrate that when the algorithm’s parallelism is ≥4, the computation speed of this method increases by over 100% compared to traditional methods, while maintaining the signal-to-noise ratio and accuracy of the phase demodulation results. Therefore, this method offers potential advantages in accelerating the phase demodulation process and is highly suitable for large bandwidth, embedded, and real-time sensing applications.
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