电泳迁移率是确定从多普勒移使用非侵入性和快速的技术,称为电泳光散射。
Electrophoretic mobility is determined from Doppler shift by using a non-invasive and quick technique called Electrophoretic Light Scattering.
利用智利的天文望远镜,天文学家测量了三裂星云中气体的多普勒频移和速度。
By using telescopes in Chile, the astronomers measured Doppler shifts and thus velocities of gas in the Trifid.
假设现在你可以,对双星进行,多普勒顿移的测量。
Imagine now you can make the Doppler shift measurements of both stars.
你们可以得到所有,天文学中的有用信息,只要对双星系统进行,多普勒顿移。
And so you get all this useful information in astronomy by making the Doppler shift measurements of binary systems.
若存在一个双星系统,两颗恒星均看不见,你能得到双星的光谱,然后在光谱中看到,双星的多普勒顿移。
If you have a binary system whereby both stars are visible so you get the spectrum of both stars, then you see the Doppler shift of both stars in the spectrum.
正如我早先形容过的,我们知道二者的,多普勒顿移,记住,你们也知道,物质的质量,得到供体星和。
So now we have a situation that I just described earlier that you have the Doppler shift of both objects, and remember, I told you that you also get the masses.
现在可以测量双星的,随时间的多普勒顿移。
And now you measure the Doppler shift of star two as a function of time.
你可以运用,中子星的,多普勒顿移,这意味着你可以得到。
So by timing the pulses of the x-rays, you can get a handle on the Doppler shift of the neutron star.
相对于一般的通信系统而言,低轨卫星通信系统具有信号动态范围大,多普勒频移大且变化速度快,信道起伏剧烈等特点。
LEO satellite communication system has the properties of larger power dynamic range, larger and faster changed doppler frequency shift and rapid fluctuation compared to ordinary communication system.
讨论了利用GPS多普勒频移观测值确定运动载体速度的基本原理,估计出采用这一方法可以达到的精度。
The basic principle for determining the speed of moving vehicles with GPS Doppler observed values is discussed, and the available accuracy with this method is presented.
本文详细的论述了依据正交相位检测法提取多普勒频移信号的方法,并对各部分实现电路作一简要的介绍。
This paper has discussed the way of probing Doppler shift signal based on crossed phase detecting method in detail and introduced each function circuits briefly.
它是一种类似的多普勒频移的效应,就像救护车在你面前驶过时,会促使逐渐靠近你的警报器明显地改变其音调那样。
A similar effect, called the Doppler shift, causes the siren of an approaching ambulance to apparently change pitch as it passes you.
信号的任何多普勒频移无论如何都不会移出这个频带,而且也肯定会是整个信号的一个组成部分。
Any Doppler drift in the signal would fall within this wide band anyway and will form part of the total signal.
雷达回波信号中,除幅度、相位和多普勒频移外,还存在第四特征——极化信息。
Besides amplitude, phase and Doppler frequency, polarimetric information is the fourth characteristic in the radar echo.
超声血流仪实现其测量血流速度的关键是多普勒频移信号的提取,多普勒频移信号是血流速度的真实反映。
As Doppler shift signal can significantly reflect the speed of flow, the abstracting of Doppler shift signal is the key of blood flow speed testing in a ultrasonic blood flow detector.
但两者都对载波频率偏移敏感,且在AWGN和多普勒频移环境下表现相当。
But both of them are sensitive to carrier frequency shift, further, they have comparative BER under AWGN and Doppler shift environment.
高动态环境存在较大的多普勒频移,这使得普通的GPS接收机在没有惯导辅助的情况下很难可靠工作。
There is great Doppler frequency shift under high dynamic circumstances, thus the common GPS receiver cannot work reliably without the help of inertial navigation devices.
电离层高频反射回波的多普勒频移观测是研究电离层扰动的一个重要方法。
Doppler frequency shift observation of ionospheric high frequency echo is an important method for studying ionospheric disturbances.
针对衰落信道中广泛存在的多普勒频移现象,本文提出了一种MPSK信号数字化识别解调的方法。
A new method for digital identification and demodulation of MPSK signals is presented under the condition of the Doppler frequency shift of channel attenuation.
本文分析了电离层的变化和运动引起多普勒频移的物理机制,假定了一个包含多种因素的电离层模型。
The mechanism of Doppler frequency shifts resulted from variations and movement of ionosphere is analysed, and a general model for the ionosphere involving several factors is assumed.
在复合系统通信中,飞行器的高动态使扩频信号存在多普勒频移。
In the communication of multiplex system, the DS signal exists Doppler frequency shift for the high dynamic situation of aerocraft.
从轨道方程出发,对影响卫星光链路接收机带宽的主要因素———多普勒频移进行了研究。
The Doppler frequency shift, the main factor restricting the bandwidth of receiver in inter satellite laser link, with orbit equations is calculated.
利用洛伦兹变换导出了相对论性的多普勒颇移的普遍公式,并且讨论了波源的超音速运动情况。
A general formula of relativistic Doppler shift is obtained from Lorentz transformation, and the supersonic motion is discussed as well.
状态方程综合考虑了多普勒频移、定时误差。
Doppler frequency drift and timing error were considered in state transform equations.
进一步的分析显示,多普勒频移不能解释朝长波方向扫描的波长自扫描现象。
Furtheremore, the analysis indicates that the Doppler frequency shift cannot be Used to explain the wavelength self-scanning initially towards the longer wavelength.
低轨卫星的信道与地面无线信道具有不同的特点,低信噪比与大多普勒频移是低轨卫星信道的两个显著特征。
The channel of LEO satellite is different from wireless channels on the ground. Low SNR and large Doppler shift are the two characteristic of LEO satellite channel.
在OFDM系统中,影响其性能的一个重要参数就是最大多普勒频移。
The maximum Doppler frequency shift is an important parameter which affects the performance of the OFDM system.
此外,应用多普勒频移的方法,可以发现恒星的质量。
Furthermore, applying the Doppler shift method, one can find the mass of a star.
此外,应用多普勒频移的方法,可以发现恒星的质量。
Furthermore, applying the Doppler shift method, one can find the mass of a star.
应用推荐