1) Doppler frequency
多谱勒频率
2) pulsed wave Doppler
频谱多普勒
1.
Methods Color Doppler flow image(CDFI) combined with pulsed wave Doppler(PW) was used to define the course of vertebral artery and determine the parameters of blood flow for comparative study between two groups: patient group(30 patients with stenotic vertebral artery's inner diameter <2.
8 mm的狭窄患者30例作为病例组,另选健康自愿者30例作为对照组,分别进行彩色多普勒(CDFI)及频谱多普勒(PW)血流显像检查,观察椎动脉走向,测其内径、峰值流速(Vmax)、阻力指数(RI)。
3) Doppler Spectrum
多普勒频谱
1.
The blood flow of the main renal artery and segmental renal vessels before and after the sclerotherapy were measured by Doppler spectrum, meanwhile, another 20 cases were chosen as c.
结论超声引导下穿刺注射99·9%乙醇治疗肾囊肿是一种安全、微创、高效、经济的治疗方法;多普勒频谱检测肾血流有助于了解肾囊肿对肾脏的影响。
2.
In the algorithm the doppler spectrum of sea clutter is di- vided into the so-called platform motion spectrum and the sea-echo spectrum.
文中提出新的海杂波模拟算法,该算法将海杂波的多普勒频谱分解成平台运动频谱和海面自身运动频谱,通过脱机方式计算这两个频谱分量,从而有效地减少计算量,使模拟能实时完成。
4) Doppler frequency shift
多谱勒频移
1.
And the influence of the Doppler frequency shift on UAV-UWB communication link is analyzed and simulated.
重点分析了无人机中继模型中,由于无人机间的相互运动造成的多谱勒频移对超宽带通信链路性能的影响。
5) Doppler shift
多谱勒频移
1.
This paper studies and investigates the performance of ARDPM, differential joint multi-amplidute and mulit-phase modulation over fading channel under different Doppler shift.
本文研究了联合多幅多相差分调制方式—ARDPM在衰落信道下及不同多谱乐频移时的性能,并通过计算QAM系统和ARDPM系统在不同多谱勒频移时的误码率上界,对两个系统的性能进行了比较。
6) Doppler spectral imaging
频谱多谱勒紧
补充资料：频率计量(见时间频率计量)
频率计量(见时间频率计量)
frequency metrology: see time and frequency metrology
口n IQ liliang顷率频率计皿(f比quency metrolo盯) 计t。见时闰
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