DOPPLER

作品数:612被引量:1436H指数:14
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相关机构:中国科学院复旦大学福建医科大学清华大学更多>>
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Experimental Study of Liquid Metal Flow for the Development of a Contact-Less Control Technique
《Fluid Dynamics & Materials Processing》2024年第7期1553-1564,共12页Aleksandr Poluyanov Ilya Kolesnichenko 
supported by Russian Science Foundation Grant RSF-22-19-20106。
The article presents an experimental study on the flow of an eutectic gallium alloy in a cylindrical cell,which is placed in an alternating magnetic field.The magnetic field is generated by a coil connected to an alte...
关键词:Ultrasonic doppler velocimeter electrically conductive medium azimuthal pinch experiment in liquid metal MAGNETOHYDRODYNAMICS 
Transverse flowmetry of carbon particles based on photoacoustic Doppler standard deviation using an auto-correlation method
《Optoelectronics Letters》2015年第3期226-228,共3页卢涛 孙丽君 
supported by the Joint Funds of the National Natural Science Foundation of China(No.U1204612);the Natural Science Foundation of He’nan Educational Committee(No.13A416180)
In order to measure the flow velocity of carbon particle suspension perpendicular to the receiving axis of ultrasound transducer, the standard deviation of photoacoustic Doppler frequency spectrum is used to estimate ...
关键词:BANDWIDTH Carbon Correlation methods Flow velocity Mathematical transformations Optical pumping Pumping (laser) STATISTICS Time domain analysis Transducers Ultrasonic propagation Ultrasonic scattering Ultrasonic transducers 
A time domain correction method for Doppler-distortion signal from acoustic moving source被引量:2
《Chinese Journal of Acoustics》2014年第1期32-41,共10页LIU Fang HE Qingbo SHEN Changqing HU Fei ZHANG Ao KONG Fanrang 
supported by the National Science Foundation of China(51075379)
Doppler effect widely exists in the signal from the moving acoustic source. In order to solve such problems as frequency shift and frequency band expansion, a time domain cor- rection method is presented in this paper...
关键词:time A time domain correction method for Doppler-distortion signal from acoustic moving source 
Transition from wavelets to ripples in a laboratory flume with a diverging channel被引量:6
《International Journal of Sediment Research》2008年第1期1-12,共12页William B. RAUEN Binliang LIN Roger A. FALCONER 
An experimental investigation on the initiation and development of bed forms on a bed of fine silica sand was conducted under alluvial flow conditions in a laboratory flume with a diverging channel. The main aims of t...
关键词:Bed form Bed ripple Doppler sonar Scale model Wave height Wavelength 
Emboli detection using the Doppler ultrasound technique
《声学技术》2003年第z1期15-18,共4页WANG Yuanyuan, CHEN Xi, ZHANG Yu, WANG Weiqi (Department of Electronic Engineering, Fudan University,Shanghai 200433,China) 
Embolic detection is very important to the early diagnosis of vessel disease. The Doppler ultrasound technique is one of the common methods to detect the emboli non-invasively. When the emboli pass through the sample ...
关键词:EMBOLIC signal Doppler ultrasound detection 
Range-instantaneous Doppler imaging of inverse synthetic aperture sonar
《声学技术》2003年第z1期48-51,共4页XU Jia~(1,2), JIANG Xingzhou~(1), TANG Jingsong~(1) (1. Navy Engineering University, Wuhan 430033, China 2. Department of Electronic Engineering, Beijing 100080, China) 
Because the existing range-Doppler algorithm in inverse synthetic aperture sonar (ISAS) is based on target model of uniform motion, it may be invalidated for maneuvering targets due to the time-varying changes of both...
关键词:INVERSE SYNTHETIC APERTURE SONAR (ISAS)  range-instantaneous Doppler  maneuvering target  TIME-FREQUENCY analysis 
马氏体相变过程中的Doppler展宽能谱线形参数
《上海钢研》1989年第2期37-40,共4页王景成 秦桂英 邵自昌 陈付时 
测量了马氏体(Fe-Ni合金)相变过程和热弹马氏体(Ti-Ni合金和Cu-Zn-Al合金)相变过程中的正电子湮没Doppler展宽能谱线形参数,其数据对于认识马氏体相变本质和热弹马氏体相变本质、相变过程中的缺陷变化、和相变前驱效应,对于解释形状记...
关键词:马氏体钢 相变 DOPPLER 线形参数 
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