The scientists found that the precursor wave front of a single photon always travels at c, like the signal velocity of large groups of photons.
科学家发现，单个光子的前驱波头一般以光速c传播，就像由大量光子携带的信号的传播速度一样。
Although previous studies have found that the "group velocity" of light can travel faster than c, the "signal velocity" -the speed at which information travels -cannot.
尽管先前的研究已经证实，光的“群速度”可以超越光速c，而“信号传播速度”——光携带的信息的传播速度——不能超越光速。
Although previous studies have found that the "group velocity" of light can travel faster than c, the "signal velocity" - the speed at which information travels - cannot.
尽管先前的研究已经证实，光的“群速度”可以超越光速c，而“信号传播速度”——光携带的信息的传播速度——不能超越光速。
It shows that the signal will become bad with the increase of transmission velocity and distance by comparing the wave figure and eye diagram of input and output pulse.
通过比较输入与输出信号脉冲波形和眼图发现，随着传输速率和传输距离的增加输出信号劣化。
It will be affect the range processing that the frequency agile of carrier in frequency agile signal arouse the variety of Doppler frequency, so the compensate of velocity door is obligatory.
跳频信号中载频的跳变会引起多普勒频率的变化，这对距离的处理产生影响，必须进行速度门的处理。
Random pulse position modulation (RPPM) signal not only has good resolution of distance and velocity, but also has low probability of interception and strong properties of eccm.
随机脉位调制信号不仅具有良好的距离和速度分辨力，而且具有较低的被截获概率和较高的抗干扰性能。
There exist ambiguities of range and velocity in the signal detection of pulse Doppler radar.
脉冲多普勒雷达在信号检测时存在距离模糊和速度模糊的问题。
Before analyzing seismic wave anomaly and velocity profiles. the polarity of reflected signal should be adjusted to be same as the physical significance of reflection coefficient.
在震波异常与速度剖面分析之前。应将反射信号之极性调整到与地层中反射系数之物理意义相一致。
In the design of filter, especially for the real time signal processing, the demand on the filter performance is not as high as that on the filter velocity.
在滤波器设计中，特别是实时信号处理场合，有时对滤波器的性能要求并不高，但对处理速度要求高。
In multilayer interconnected substrate dielectric constant of the substrate materials immediately affects transfer velocity of signal in the device.
在多层互连基板中，基板材料的介电常数直接影响器件信号的传输速度。
The comparison dealts mainly with the frequency of drop forming, the velocity of drop flying, the drive signal and the complexity of drive circuit.
其中主要就墨滴形成频率，墨滴飞行速度，驱动信号及驱动电路等关键参数进行了比较。
The performance of signal process circuit of ABS wheel velocity directly works on the control effect of the system, so designs and tests need to be repeated.
ABS轮速信号处理电路性能的优劣直接关系到系统的控制效果，因而需要反复设计和实验验证。
An inertial controlling scheme to the altitude with the signal of the axis apparent velocity and its integral by the method of conjugate equation is presented in this paper.
本文以飞行器轴向视速度及其积分为控制信号，用共扼方程法设计了一种惯性高度控制方案。
Theoretical analysis and simulation results are given to show the ambiguity function, the distance resolution, the velocity resolution, the intercept factor of the hybrid signal.
理论分析了和计算机模拟了该类信号的模糊函数(图)，距离分辨率、速度分辨率和低截获性能。
On the basis of the principle of range-Doppler coupling of linear frequency modulation signal, a new method of radial velocity estimation for high coupling coefficient is presented.
本文在分析了线性调频信号距离—多普勒耦合原理的基础上，提出了一种高耦合系数条件下径向速度估计的新方法。
The signal modulation of velocity deception jamming is complex, and it is hard to complement anti jamming using the statistical feature extraction method.
速度欺骗干扰因信号调制较为复杂，难以用统计特征提取方法来实现抗干扰。
The effects of movement velocity of probe on the detecting signal are analyzed and researched based on theories and experiments. The results are very important to practical detection.
主要从理论和实验两个方面对涡流检测时的探头运动速度对检测信号的影响进行了分析和研究，研究的结果对实际的检测具有很重要的指导意义。
Small shifting of acceleration signal will result in the abnormal alteration of valve velocity.
气门加速度信号的微小漂移，将导致积分的速度信号严重失真。
A new method of low intensity radiated noise measurement is shown using acoustic combined sensor and combined signal processing with pressure and particle velocity.
本文研究运用组合传感器和声压、振速联合信号处理技术进行低噪声通过特性的测量。
In hydraulic synchronizing lifting technology for oversize structure, computer output PWM signal as the input current of proportional valve is used to control the velocity of hydraulic cylinder.
在大型构件液压同步提升技术中，采用了计算机输出的脉宽调制信号作为电液比例流量阀的输入电流信号控制液压提升器的速度。
Simultaneously, the method implementing precise velocity estimation in two steps associative with PCSF signal characteristic under high moving targets is presented.
同时，结合相位编码步进频率信号形式提出在高速目标情况下实现精确速度测量的两步估计方法。
A new method is presented to implement the velocity radar real-time digital signal processing system based on DSP and FPGA.
针对测速雷达实时数字信号处理系统的设计问题，提出了一种基于DSP与FPGA的设计新方法。
The paper studies the concepts of phase velocity and group velocity on electromagnetic wave propagation and discusses the relation between signal conveyance and energy conveyance.
文章研究了电磁波传播的群速与相速概念，论证了信号传送与能量传递的必然联系。
Considering the direct angular velocity signal output from fibre optic gyroscope, a novel coning compensation algorithm was introduced and it need input angular velocity signal.
鉴于光纤陀螺角速率信号可以直接获取，提出了一种以角速率信号作为圆锥补偿算法输入的新补偿算法。
Because the wavelet packet decomposition is very sensitive to signal of the strange point, this characteristics can be used to follow the velocity signal of motor vibration.
小波包分解本身对信号的奇异点十分敏感，此特点可以用来跟踪电机振动速度信号。
The conversion mechanisms of a chemical signal (gas concentration) into a physical signal (SAW phase velocity change) in SAW gas sensors and the way to separate them are discussed.
讨论了在SAW气体的传感器中把化学信号(气体浓度)转换成物理信号(SAW相速度变化)的机制以及将它们彼此分离开来的方法。
The method of the two-channel optical fiber reflecting for particle velocity measurement was adopted to get the time sequence signal of moving particle velocity in the fluidized bed.
实验采用双光纤反射式速度测量原理，获得颗粒速度的时间序列信号，通过对双通道信号的互相关分析获得取样点的颗粒速度；
For a typical magnetic needle, the initial signal peak became proportional to the velocity step after a threshold value of velocity was over taken.
对某个特定磁探针来说，其初始信号峰值与速度成正比的条件是速度大于某个阈值。
In dynamic state the velocity of the sediment-laden flow and Doppler signal characteristics are measured.
动态下测量了浑水流动速度和多普勒信号特性。
In dynamic state the velocity of the sediment-laden flow and Doppler signal characteristics are measured.
动态下测量了浑水流动速度和多普勒信号特性。
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