基于测量数据的修正，模态频率误差在3%以内。
When experimental data is used, error of modal frequencies is less than 3%.
第三章简单介绍了时间和频率误差对系统性能的影响。
Chapter three takes a brief introduction to the influence on system performance because of the time and frequency errors.
逆扩频装置，时序检测装置，信道估计装置和频率误差测量方法。
Reverse-spread spectrum device, time sequence inspection device, channel evaluation device and method for measuring frequency faults.
该锁相环由计算频率误差、更新环路中间变量、输出控制信号组成。
The SPLL consists of calculation frequency error, updating loop middle variable, and output control signal.
这样使测频误差在理论上只含有标准频率误差，可以使测量误差降低。
By doing so, there will only be standard frequency error in theory and decrease the measuring error greatly.
在接收机处，确定所接收的数据流的相位旋转以去除残留频率误差或者估算相位噪声。
At a receiver, a phase rotation of the received data stream is determined to remove a residual frequency error or to estimate the phase noise.
提出了一种基于虚拟仪器的精确测量TD - SCDMA信号频率误差的方法，并给出了系统设计。
A method of measuring TD-SCDMA signal frequency error based on virtual instrument is proposed.
提供了一种实现改进残留频率误差和相位噪声估算的、适合于在高频通信系统中使用的单载波调制方案。
A single carrier modulation scheme suitable for use in high frequency communication systems is provided that achieves improved residual frequency error and phase noise estimation.
而且不像雇用铁谐振变压器稳压器的AR -PRO是不敏感的线频率误差小，非常适合搭配发电机使用。
And unlike voltage regulators that employ ferro-resonant transformers, the AR-PRO is not sensitive to small errors in line frequency, making it ideal for use with generators.
详细地讨论了微分吸收激光雷达测量气体密度时中心频率的漂移所引起的测量误差。
The measurement error of differential absorption laser radar caused by the shift of its center frequency in measuring atmosphenc density has been discussed particularly.
传统的快速傅里叶变换（FFT）可以有效地对正弦信号进行分析，但对于分析频率相近的正弦信号却存在很大的误差。
Traditional FFT can effectively analyze the sinusoidal signal, but the very big error exists for analyzing the similar frequency sinusoidal signal.
本文从旋转变频磁控管式频率捷变雷达的本振频率跟踪原理出发，分析了产生本振频率跟踪误差的主要因素。
The' main factors resulting in local frequency tracking error are analyzed based on the principles of the tracking local oscillator for frequency agile radars of rotary tuning magnetron type.
通过适当调节两光束的频率调制幅度，可有效地实现克尔效应误差的消除。
Through proper adjustment to frequency modulation amplitude, the Kerr-effect-induced bias can be effectively reduced.
将频率实测值与计算值进行比较，同时进行了误差分析。
Comparisons between the measured value and the calculated value of the frequency are made, and the error analyses are also carried out.
本文主要研究力矩电流产生器的频率特性和误差分析，同时根据实验结果评价了它的性能。
This paper investigates mainly frequency characteristic and error analysis, evaluates the performances of the torque current generator according to experimental results.
文章介绍了一种用直接数字计数测量瞬时频率的原理，并进行了测频误差分析。
This paper proposed the theory of digital counting instantaneous frequency measurement and analyzed the error of frequency measurement.
但当循环频率存在误差时，上述算法的性能将急剧下降。
But all the algorithms' performance will severely degrade when CFE (cyclic frequency error) exists.
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.
该仪器具有基线漂移提示功能，从而确定仪器背景采集的频率，可以降低分析误差，提高检测结果的准确度。
This instrument can clue on baseline shift to decide the frequency of background scanning, which can deduce NIR analysis error and improve NIR veracity.
分析了自适应望远镜系统的波面补偿剩余误差与频率响应的关系。
The relationship between residual wavefront phase error and frequency response in an adaptive optical telescope is analyzed.
加工高质量的石英音叉需要解决工艺误差导致的机械耦合误差及频率漂移等问题。
To get high quality quartz tuning forks, mechanical coupling error and frequency excursion by machining errors must be resolved.
控制的频率和相位偏移误差均达到了10 - 5，稳定度达到了0.05%。
When error of the frequency and phase shift is 10-5, its stability is 0.05%.
本方法能够降低不同频率校正量误差的影响，尤其减少了高频成分的损失，对提高资料分辨率有较好的效果。
The method can reduce influence of errors existing in statics for different frequency, especially reduce the loss of high-frequency components, so that has a good result in improving data resolution.
重点介绍了交点频率的计算方法和误差分析，提供了用单片机实现这两种方法的测量原理和硬软件设计思路。
The compute method and error analysis of intersection frequency as well as the measuring principle and designing concept of hardware and software of two methods via single-chip computer are focused.
得到了系统在不同的输入转矩波动、齿侧间隙、齿轮综合误差、激励频率和阻尼比参数下系统的全局特性。
The system's global characters are obtained under different input torque fluctuation, backlash, composite transmission error, exciting frequency and damping ratio.
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.
因此在工程计算中不计相干函数随频率的变化不会带来太大的误差。
So, in engineering computation it is acceptable to neglect the directional variation of coherence value with frequency.
但是，单靠中国余数定理仍无法解决距离测量和多普勒频率测量中的误差和遮挡问题。
But the Chinese Remainder Theorem cannot solve the error and the blind region made in range and doppler velocity measurements.
引入了误差放大器的频率补偿的方法，并着重分析了双零点、双极点的补偿电路。
Then the methods of how to compensate the error amplifier is introduced, a double-zero, double-pole construction is analyzed individually.
引入了误差放大器的频率补偿的方法，并着重分析了双零点、双极点的补偿电路。
Then the methods of how to compensate the error amplifier is introduced, a double-zero, double-pole construction is analyzed individually.
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