多普勒频移

It turns out that the Doppler Shift also applies to light.

原来多普勒频移也是用于光

The channel property of frequency selective fading and Doppler frequency shift are the biggest challenge to the broadband mobile communication service.

在信道的衰落特性中，对宽带无线移动业务影响最大的是多径衰落和多普勒频移。

The frequency offset may be caused by many sources, Doppler shift or local oscillator error, for example.

这种频率偏移可能是由多个信源引起，例如多普勒频移或本机振荡器误差。

To measure the satellite oscillator frequency accurately is of great significance for transmitting time and frequency information by satellite,and the difficult point of the measurement is to deal with the Doppler frequency shift.

星载振荡器频率的测量对利用通信卫星进行标准时间和频率传递有重要的意义，测量的难点是多普勒频移的处理。

A Fabry-Perot etalon with high spectral resolution is used as the frequency discriminator in the direct detection wind lidar.

在直接探测测风激光雷达中，多普勒频移由高分辨率的Fabry-Perot标准具检测得到。

Besides, application of the atom interferometers to gravitational acceleration measurement and the research of the atom-interferometer gravity acceleration's precision are mainly described.

进一步详细讨论了原子团大小、拉曼脉冲激光尺寸、原子的多普勒频移等因素对重力加速度测量精度的影响。

Its characteristic is through impulse stimulation by using the grating width, diffraction series, laser wavelength, and the Doppler frequency shift to determine the shock velocity and the shock acceleration instantaneous value.

对差动式光栅激光干涉冲击校准装置的原理作了介绍，特点是使用冲击激励，通过光栅的栅距、衍射级数、激光波长及激光的多普勒频移来最终确定冲击速度和加速度的瞬时值。

Ship to receive satellite signals for ships and satellites to changes in the relative position of the frequency of changes, called the Doppler frequency shift can be used to determine the satellite position, while the ship's position is located in a satellite location for the focus of hyperboloid , taking into account pairs of curved intersection line with the Earth's surface, then the boat is located on the intersection of two curves.

航船上接收卫星讯号因船与卫星相对位置的变化而发生频率变化，叫做多普勒频移，可用于确定卫星位置，而船位位于以卫星位置为焦点的双曲面上，考虑到双曲面与地球表面的交线，则船位于两条曲线的交点上。

Considering the ionospheric refractive index in geomagnetic field, the radiowave polarization plane rotation has been calculated. For linear frequency modulation pulse signal, the expression of Doppler shift error due to ionospheric dispersion characteristics is derived.

本文还计算了考虑地磁场时电离层双折射指数特性引起的电波极化面旋转角，推导出对于线性调频脉冲信号电离层介质色散特性引起的合成孔径时间内多普勒频移误差的表达式。

This paper concerns relative technologies about carrier frequency synchronization and estimation in downlink signal in large Doppler frequency shift condition.

本文对大多普勒频移情况中，下行信号载波频率同步估计的相关技术进行了研究。

Life. But the intrinsic way of the Internet by wire confines accessing and using of the network information.

然而，Internet固有的有线连接方式大大限制了人们对网络信息的访问和使用。

I have a strong persuasion that this is true .

我坚信这是正确的。