多普勒效应 接收机相对于发射机的移动,引起接收信号的射频的频率变化,即多普勒 (Doppler)频移。多普勒扩展(DopplerSpread)是指多普勒频谱实际上不等于 零的频率范围。
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小尺度衰落主要包括以下几个方面: 1多普勒效应(Doppler): 实际通信中,由于移动台相对基站的不断移动,会使接收信号的频率发生偏移, 当移动台移向基站时,频率会变高;当远离基站时,...
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Doppler radar 多普勒雷达 ; 都卜勒雷达
Doppler effect 多普勒效应 ; 都卜勒效应
Doppler shift 多普勒频移 ; 都卜勒频移
transcranial doppler 经颅多普勒 ; 经颅多普勒超声
Relativistic Doppler effect 相对论性多普勒效应
Color Doppler 彩色多普勒 ; 彩色多普勒超声 ; 彩色都卜勒
Doppler broadening 多普勒谱线增宽 ; 多普勒展宽 ; 多普勒致宽 ; 都卜勒致宽
color Doppler ultrasound 彩色多普勒超声 ; 彩色多普勒 ; 彩超
In the first chapter of this article, the application of Doppler radar in the world is summarized.
本文第一章概述了多普勒天气雷达的国内外应用现状。
参考来源 - 我国新一代天气雷达的地图设计及单多普勒雷达水平风场某些反演技术的研究Conclusion:Color Doppler ultrasound is beneficial for the diagnosis of renal angiomylipoma.
结论:彩色多普勒超声有助于对RAL的诊断。
参考来源 - 彩色多普勒超声和二维超声诊断肾血管平滑肌脂肪瘤Results:Vertebral artery blood flow parameters were significantly improved in all of 87 patients in the observation group after treatment,observed by transcranial Doppler ultrasound(TCD).
通过超声经颅多谱勒(TCD)观察椎动脉血流改善情况。
参考来源 - 桂枝加葛根汤治疗椎动脉型颈椎病的疗效观察Phase-coded radar, however, has the disadvantage of higher range sidelobe and Doppler sensitivity.
当然,相位编码雷达也存在着距离旁瓣较高和多卜勒敏感等问题。
参考来源 - 相位编码雷达信号处理及其应用研究·2,447,543篇论文数据,部分数据来源于NoteExpress
以上来源于: WordNet
High frequency color doppler ultrasonography is of value in diagnosis and differential diagnosis of the cervical lymph nodes diseases.
高频超声彩色多普勒血流显像对颈部淋巴结病变具有诊断和鉴别诊断价值。
Airborne pulse doppler weather radar could display clear colorized weather image dynamically on its screen and give pilots alarm about the extreme weather area to avoid risk betimes.
机载脉冲多普勒气象雷达则能够用清晰的图像实时显示出飞机前方的气象状况,并及时将极端天气的报警信息提供给飞行员,以提前躲避危险。
Objective To explore clinical applications of color doppler ultrasound diagnosis of breast cancer.
目的探讨经彩色多普勒超声诊断乳腺癌的临床应用。
The Doppler effect explains changes in the length of light waves or sound waves as they move toward you or away from you.
VOA: special.2009.04.29
Suddenly they do the Doppler effect where they turn their backs to you, in a way, and they're marching away from you and you hear very little sound.
突然,他们也产生了多普勒效应,当他们转身背对你时,当他们背离你前进时,你会听到一种很微弱的声音
Yeah? Doppler principle.. - I beg your pardon?
多普勒效应原理,-能不能再说遍
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