如果您这么做，您会发现期望频率是0，因为平均值的偏差的和永远是0。
If you do this, you find the the expected frequency is 0 because deviations from a mean always sum to 0.
这种颜色偏差被体现在构成屏幕图像的各种频率中。
This colour bias is reflected in the mixture of frequencies that form the picture on the screen.
这个频率不存在“如果和但是”，绝对零度的条件下，9192631770赫兹，不会有任何偏差。
No ifs and buts, at absolute zero temperature, this is exactly 9, 192, 631, 770 hertz.
为了减小正交频分复用系统受频率偏差的影响，在OFDM系统中设计了一种新的载波频偏估计算法。
To reduce the impact of carrier frequency offset in OFDM system, this thesis designs a new carrier frequency offset estimation scheme for OFDM system.
此参数指定一个最高和最低频率偏差，以百分比表示或百万分之的。
This parameter is specified with a maximum and minimum frequency deviation, expressed in percent or parts per million.
这种算法具有所需数据窗的时间短、计算精度高和不受系统频率偏差影响的优点。
This algorithm needs shorter data window time and has higher calculation precision and is not affected by deviation of power frequency.
在稀疏信号表示的并行选取字典算法中，当频率不在栅格点上时，对应的幅度估计可能会有很大的偏差。
In parallel basis selection algorithms of sparse signal representation, there will be serious bias in amplitude estimation when frequency is not in grid.
设计了统计直方图数据处理方案，按照正态分布的特性找出了寄生频率调制的标准偏差。
Statistics histogram data processing scheme is designed. Standard deviation of frequency modulation is found out according to normal distribution characteristics.
如何克服这两个问题是OFDM技术研究的主要方向之一，本文主要是研究OFDM技术中的频率偏差估计问题。
How to eliminate the two problems is the main task of the research of OFDM. In this thesis, we mainly discuss the problem of frequency offset estimation.
目前我国电能质量国家标准主要规定了五个指标：频率、谐波、电压偏差、三相不平衡及电压波动与闪变。
At present, our country power quality national standard was chiefly stipulated five quotas: frequency, harmonic and voltage deviation, three-phase unbalance and the voltage fluctuation and flicker.
随着频偏的增大，自适应频率估计的偏差和方差也随之增大。
With frequency bias increasing, estimated bias and variance of adaptive frequency estimator (AFE) enlarge.
在无线移动通信中，接收机的本地振荡频率和载波频率之间往往存在较大的频率偏差，AFC用于克服此频偏。
In wireless communication system, there is a large frequency bias between carrier frequency and local oscillating frequency. AFC is contributed to eliminate it.
提出了一种改进的桨距角控制方案——将系统频率偏差信号引入桨距角控制系统。
An improved pitch control scheme is presented by introducing a frequency deviation signal into the control system.
而产生ISI和ICI的主要原因是在OFDM系统接收端产生的符号定时偏差和载波频率偏差。
The most critical causes yielding the ISI as well as ICI are symbol timing and carrier frequency offset which are occurred in the OFDM receiver.
在理想同步采样的条件下，提出了一种基于简谐信号复幅度的频率偏差求取算法。
Based on the complex magnitude of harmonic signals and under the condition of ideal synchronous samplings, an algorithm for computing the frequency deviation is proposed.
在分析国外研究状况及中国AGC实际运行的基础上提出了一种频率偏差系数确定方法。
A frequency bias coefficient setting technique is proposed by analyzing the investigative status abroad and AGC performance in China.
为计算频率偏差，提出了一种新的频率计算方法。
For calculating the frequency variance, a new method was proposed to calculate the ridge frequency.
因此，解调前必须去除频率偏差。
OFDM的主要缺点是对载波频率偏差很敏感。
One of the principal disadvantage of OFDM is sensitivity to frequency offset.
OFDM系统自身的正交多载波调制特点，决定了其对定时误差和载波频率偏差十分敏感。
The orthogonal multicarrier modulation, which is the main character of OFDM, determines that it is very sensitive to both timing synchronization error and carrier frequency offset.
以开口箱的系统频率响应曲线为分析目标，要观察ts参数的偏差所产生的变化。
This article takes the system frequency response curves in vented box system as the target, to observe the changes by the effects from the deviation in ts parameters of drivers.
然而，OFDM系统对频率偏差和相位噪声比较敏感。
However, OFDM is sensitive to frequency offset and phase noise.
但是实际需要的是使频率偏差的绝对值最小而不是频率偏差的平方和最小。
However we want to get the least absolute value of frequency deviation not the least square sum of it.
在适当的破碎频率下可以得到粒径偏差小于10%的微球。
Under proper vibration frequency, difference between diameter of microcapsules is less than 10%.
通过两区域互联电网仿真实验，同其他频率偏差系数的设定方式进行了分析和比较，其结果表明了该方法的优越性。
Compared with other bias Settings in two-area interconnected power system model, the simulative results indicate the superiority of the proposed technique.
目前，估计载波频率偏差和符号定时偏差的算法主要有数据辅助的方法和非数据辅助的方法以及基于循环前缀的算法。
Various existing synchronization algorithm to estimate symbol timing offset and carrier frequency offset can be classified into blind and pilot-aided methods and algorithm based on cyclic prefix.
在水文频率计算中由于误差的存在，使得估计值与实际值之间存在偏差，这种偏差导致在水利工程设计中产生了不安全因素。
Due to errors of hydrological frequency calculation, the deviation between the estimated value and actual value causes the design of water conservancy projects to be insecure.
该算法具有较大的估计载波频率偏差的范围和较高的估计精度。
The algorithm features the large estimation range for carrier frequency deviation and high estimation accuracy.
电能质量是指引起用电设备故障或不能正常工作的电压、电流或频率的偏差。
The power quality is denoted by the deviation of voltage, current or frequency, which makes electric equipments not work proper.
电能质量是指引起用电设备故障或不能正常工作的电压、电流或频率的偏差。
The power quality is denoted by the deviation of voltage, current or frequency, which makes electric equipments not work proper.
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