Tomographic Measurement of Vortex Air Flow Field Using Multichannel Transmission and Reception of Coded Acoustic Wave Signals
Tomographic Measurement of Vortex Air Flow Field Using Multichannel Transmission and Reception of Coded Acoustic Wave Signals
复制标题
利用编码声波信号的多通道传输和接收对涡流气流场进行层析测量
DOI：
10.1143/jjap.50.07hc09
复制
发表时间：
2011
影响因子：
1.5
通讯作者：
A. Yamada
中科院分区：
文献类型：
--
作者：
Haiyue Li;Syogo Takata;A. Yamada
研究了一种用于涡旋风速剖面监测的声波走时层析成像系统，该系统沿监测区两侧放置多通道平行的声波发射机/接收机对。到目前为止，为了防止元件之间的串扰，必须为每个传感器元件连续进行旅行时间采集。因此，在保持空气流场的时间变化的同时，很难实现实时观测。为了实现多通道走时的同时采集，提出了一种利用Kasami序列进行编码调制的方法。为了验证该方法的有效性，对仿真数据和实验数据进行了基本检验。
An acoustic travel time tomography system for the monitoring of the vortex wind flow velocity profile has been studied, where multichannel parallel acoustic transmitter/receiver pairs are placed along opposite sides of the monitoring region. Thus far, to prevent cross-talk between the elements, travel time collections must be made successively for every single transducer element. Hence, it is difficult to achieve real-time observation while maintaining the temporal variation in the air flow field. To realize simultaneous multichannel travel time collections, a coded modulation method is introduced using the Kasami sequence. To verify the validity of the method, basic examinations of both simulation and experiment data are carried out.
使用任意布置换能器的声学计算机断层扫描
DOI：
--
发表时间：
2009
期刊：
影响因子：
--
作者：
Ayumu Minamide;Koichi Mizutnai;Naoto Wakatsuki
通讯作者：
Naoto Wakatsuki