1) Doppler tolerance
多普勒宽容
1.
A multiaddress waveform with Doppler tolerance;
一种多普勒宽容的多址波形
2) Doppler broadening
多普勒增宽,多普勒展宽
3) Doppler broadening
多普勒加宽
1.
The Stark optical bistability with Doppler broadening is analyzed by the semiclassical theory.
用半经典理论分析了含有多普勒加宽的斯塔克效应光学双稳性,分析了多普勒加宽及其饱和效应对该斯塔克效应光学双稳性的影响。
4) Doppler broadening
多普勒展宽
1.
Effect of spectral line with Doppler broadening on optical bistability in a multi mode ring laser;
激光谱线的多普勒展宽对多模环型激光器中光学双稳态产生的影响
2.
Ion temperature and recycling particle flow velocity are obtained from Doppler broadening and Doppler shift with Gaussian fitting.
利用多道光学分析仪(OSMA)测量HT6M托卡马克限制器前Hα线形分布,通过高斯拟合由多普勒展宽和多普勒频移分别得出等离子体离子温度和再循环粒子流
3.
The results show that due to the effect of Doppler broadening the light speed reduction is significant in a range of ±600MHz one-photon detuning.
结果表明,由于多普勒展宽效应的存在,在单光子频率失谐±600MHz的范围内,光减速效应较为显著。
5) Doppler spread
多普勒展宽
1.
A detailed analysis is made on the echo s Doppler spread and range spread caused by body target spread,and on their influence on ranging.
从理论上分析了由于体目标引起的引信回波信号的多普勒展宽和距离展宽问题,以及它们对近距离扩频测距的影响。
2.
The method can significantly reduce the Inter-Carrier Interference (ICI) and additive white Gaussian noise by processing the received pilots both in multipath spread domain and Doppler spread domain.
该算法对接收 的导频信号(Pilot)分别在多径展宽域和多普勒展宽域进行处理,显著地降低了子载波间干扰和高斯白噪声的影响。
3.
RTCE is based on forecasting the inherent vulnerabilities to propagation of HF time-varying channel, including multipath delay, Doppler spread, selective fading, interference, so this paper also introduces characteristics of HF channel in the beginning.
实时选频技术是基于对短波电离层时变信道固有的不利于电波传播的各种因素,包括信道的多径展宽、多普勒展宽、选择性衰落、噪声干扰等的预测的基础上实现的,所以在开篇对短波信道的特点进行了详细的介绍。
6) Doppler width
多普勒宽度
1.
The radial velocity distribution and Doppler width distribution of Gd metal atomic vapor heated by the liner electronic gun is measured by the dye double laser induced fllorescence.
采用双束激光诱导荧光法测量钆原子蒸气束的径向速度及其多普勒宽度分布。
2.
The inversionless gain is realizable in Doppler-broadened media for a coupling field wavelength well in excess of probe field wavelength when the laser power is significantly less than the Doppler width, and stronger than that of media for the coupling field wavelength equal to the probe field wavelength.
对Λ型能级系统连续波无反转增益效应的研究表明 ,在耦合光的拉比频率小于多普勒宽度的情况下 ,多普勒加宽的非匹配能级系统 (耦合光波长λc 小于探测光波长λp)的无反转增益不仅存在 ,而且还强于匹配系统 (λc=λp)的无反转增益 ,文中从与无反转增益紧密联系的电磁感应透明 (EIT)的角度对这一现象作了解
补充资料:彩色多普勒血流成像
彩色多普勒血流成像
超声学检查方法之一。又称“彩色多普勒血流图”。应用脉冲超声多普勒原理,在二维和M型超声心动图基础上,用彩色实时显示血流的方向和相对速度,提供心脏和大血管内血流的时间和空间信息的超声诊断技术,是80年代多普勒超声心动图的重要进展。人体和血流的反射信号经结构分析和血流分析处理后,可在显示屏上显现的黑白实时二维声像图上叠加彩色实时血流影像。还可与M型超声心动图、脉冲波和连续波声谱图显示同时进行。其特点是可同时显示心腔某一断面上全部异常血流束的分布及数目;表现血流途径及方向,辨别层流、湍流和涡流;测量血流束的面积、长度、宽度;显示结构异常与血液动力学异常的关系。临床应用于心脏瓣膜病、先天性心脏病、心肌病及心脏肿瘤等无创性诊断,提高了诊断的敏感度和准确度。此技术方法尚有混叠现象及显示帧数受限的缺点。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条