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作品数：612被引量：1436H指数：14
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Sliding speed calculation of the Wenchuan earthquake fault using the Doppler effect
《Applied Geophysics》2021年第2期264-271,274,共9页Li Qi-Cheng He Shu-Geng Min Ye 
supported by the Educational Department Project of Liaoning province:LJYL040(No.551610001219)。
Currently,the fault sliding speed functions or source–time functions used in theoretical seismogram calculations have only produced theoretical results;that is,the results of the fault speed–time functions have been...
关键词：Doppler eff ect sliding speed FAULT EARTHQUAKE 
Calculation of left ventricular diastolic time constant(Tau) in dogs with aortic regurgitation using continuous-wave Doppler spectra
《Journal of Geriatric Cardiology》2021年第4期252-260,共9页Chun-Zhi FAN Jing SUN Hai-Ning ZHENG Chao-Yang WEN 
supported by the National Natural Science Foundation of China (No.81771833);the Beijing Natural Science Foundation (No.7172209)。
OBJECTIVE To investigate a new noninvasive method for calculating left ventricular diastolic time constant(Tau) through a continuous-wave aortic regurgitation Doppler spectrum.METHODS According to ultrasound guidance,...
关键词：Calculation of left ventricular diastolic time constant in dogs with aortic regurgitation using continuous-wave Doppler spectra TAU DOPPLER 
Moving target localization for multistatic passive radar using delay, Doppler and Doppler rate measurements被引量：9
《Journal of Systems Engineering and Electronics》2020年第5期939-949,共11页ZHAO Yongsheng HU Dexiu ZHAO Yongjun LIU Zhixin 
supported by the National Natural Science Foundation of China (61703433)。
Time delay and Doppler shift between the echo signal and the reference signal are two most commonly used measurements in target localization for the passive radar. Doppler rate, which can be obtained from the extended...
关键词：target localization multistatic passive radar time delay Doppler shift Doppler rate 
An underwater acoustic direct sequence spread spectrum communication system using dual spread spectrum code被引量：2
《Frontiers of Information Technology & Electronic Engineering》2018年第8期972-983,共12页Lan-jun LIU Jian-fen LI Lin ZHOU Peng ZHAI Hao ZHAO Jiu-cai JIN Zhi-chao LV 
Project supported by the National Natural Science Foundation of China(Nos.61431005,51409235,and 61401111);the Fundamental Research Funds for the Central Universities,China(No.201213004)
With the goal of achieving high stability and reliability to support underwater point-to-point communications and code division multiple access(CDMA) based underwater networks, a direct sequence spread spectrum based ...
关键词：Underwater acoustic communication Direct sequence spread spectrum Doppler estimation and compensation Channel estimation and equalization Gold code Single carrier Code division multiple access 
Identification of syndrome X using intravascular ultrasound imaging and Doppler flow mapping被引量：4
《Chinese Medical Journal》2004年第4期521-527,共7页钱菊英 葛均波 樊冰 王齐兵 陈灏珠 Dietrich Baumgart Michael Haude Raimund Erbel 
Background The purpose of this study was to assess the morphological changes and physiological function of coronary arteries in patients presenting with chest pain but having normal coronary angiograms, using intrava...
关键词：coronary angiography Doppler ultrasound syndrome X 
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