Analysis of dual-burst laser Doppler signals
Analysis of dual-burst laser Doppler signals
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双脉冲激光多普勒信号分析
DOI：
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发表时间：
2002
期刊：
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通讯作者：
H. Nobach
中科院分区：
文献类型：
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作者：
H. Nobach
来自激光多普勒风速计（LDA）的信号的处理通常要求信号源自单个颗粒。因此，在可用的LDA处理器中实施了充分的验证程序，拒绝具有多于一个突发的信号（多突发信号）。在这篇文章中，LDA信号的研究与两个重叠的突发（双突发信号）。讨论了信号的统计特性和脉冲串分离的必要性。此外，提出了一种算法，它可以用来检测和处理双突发信号，最后，该技术的能力证明使用模拟和实验获得的信号。
The processing of signals from a laser Doppler anemometer (LDA) normally requires that the signals originate from single particles. Therefore, adequate validation procedures are implemented in available LDA processors, rejecting signals with more than one burst (multi-burst signals). In this article LDA signals are investigated with two overlapping bursts (dual-burst signals). The signal statistics and the necessity of burst separation are discussed. Furthermore, an algorithm is presented, which can be used to detect and to process dual-burst signals and, finally, the capability of the technique is demonstrated using simulated and experimentally obtained signals.