Frequency error

The frequency error compensation for reactive power measurement using digital phase shift method

数字移相法测量无功功率的频率误差补偿

A highly sensitive GPS signal acquisition technique using frequency error correction

应用频率误差修正的高灵敏度GPS信号捕获技术

The reason of high to middle frequency error is analysis .

分析了中高频误差的成因。

Experimental results show that this method can measure the signal frequency error effectively and accurately .

实验证明，该方法能够有效地精确测量信号的频率误差。

Study on Power Frequency Error of SPWM in Active Inverters

有源逆变中SPWM工频误差问题的研究

Analysis of Distortion Resulting from Frequency Error and Phase Error in Synchronous Demodulation

频率误差和相位误差在同步解调中的失真分析

The problems of frequency error and spectra line splitting of the power spectrum are discussed .

讨论了功率谱的频率误差和谱线分裂问题。

We evaluate mid frequency error of optical component surface profile by power spectral density function .

提出一种可用于评价任意面型微光学元件制作误差的方法。

Blind Adaptive Beam Forming with Cyclic Frequency Error

存在循环频率误差时的盲自适应波束形成

Evaluating intermediate frequency error property of wavefront of optical components with PSD collapse

用功率谱密度坍陷评价光学元件波前中频误差特性

Especially forgetting factor ECAB has excellent performance under large cyclic frequency error .

特别是遗忘因子ECAB算法，在循环频率误差较大的情况下，仍能保持很好的性能。

Robust Cyclic Adaptive Beamforming under Cycle Frequency Error

针对循环频率误差的稳健CAB算法

By doing so , there will only be standard frequency error in theory and decrease the measuring error greatly .

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。

The SPLL consists of calculation frequency error , updating loop middle variable , and output control signal .

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。

Differing from frequency error track , it avoid spurious modulation and complexity caused by phase-locked loops .

与频率误差跟踪不同，它避免了锁相环引入的寄生调制和复杂性。

But all the algorithms ' performance will severely degrade when CFE ( cyclic frequency error ) exists .

但当循环频率存在误差时，上述算法的性能将急剧下降。

Frequency error causes much greater effect on processing result than waveform error , therefore the key to good wavelet processing lies in using correct frequency .

子波频率误差对于波处理效果的影响要比子波波形误差大得多。因此搞准子波频率是做好子波处理的关键。

The effect of the carrier frequency error and the angle spread of the received signal on the detection performance of the STC is studied .

分析存在载波频率误差和信号角度扩展时的检测性能。

Lastly , The jamming effectiveness is emphatically analyzed in the presence of bit error , bit width error and carrier frequency error .

最后分析了干扰信号在存在误码、元宽度误差以及载频误差情况下的干扰效果。

The effects of frequency error on fluid density measuring precision are analyzed theoretically , which should offer the theoretical basis to error control of on-line density measure .

最后从理论上分析了频率误差对流体密度测量精度的影响，给出了频率误差的计算方法，从而为在线测量流体密度的误差控制提供了理论依据。

Their basic frequency error performance and probability of loss-of-lock at various signal-to-noise ratios is compared by tracking a common simulated high-dynamic trajectory .

并以均方根估计误差和失锁概率为性能指标，通过对同一模拟的接收机高动态轨迹的跟踪估计，比较了两种不同估计技术的基本性能。

A new tool that can test the clock base frequency error of energy measuring devices and provide GPS standard time to calibrate real-time clock was introduced in this paper .

介绍了一种用来测量电能计量装置的时钟基频误差，并提供GPS标准时间以校准其实时时钟的新型工具。

The simulation results are that the recognition ratio is more than 90 % and the frequency error is less than 0.0185 % for the overlap coefficient ? 11.62 % .

模拟结果：当重叠系数？11.62%时，算法识别率高于90%，频率提取误差小于0.0185%。

According to the requirement of engineering design , the effects of system errors including frequency error and the error from the quadrature demodulation are analysed and experiment simulated with computer .

根据工程设计的实际需要，对脉间主频误差、正交解调误差系统误差的影响进行了分析和计算机仿真实验。

The results of test indicate that the frequency error of the accelerometer is less than 0.1 % and the degree of linearity is 0.15 % in its frequency band .

试验结果表明：伺服加速度计在其频带内频率误差小于0.1%，线性度为0.15%。

A thorough study is made into the influence of frequency error factor k varied with grid 's natural frequency error performance β on appraisal value of Control Performance Standard ( CPS ) .

研究了频率偏差系数k随电网自然频率偏差特性β改变对CPS考核值的影响。

Our results of the SAWF ares insertion loss about 8 dB , centre frequency error less than 60 kHz and Q value more than 590 .

实验结果，主要技术性能指标达到插入损耗约8dB，中心频率偏差小于60kHz，Q值则超过590。

Algorithm for each step of WCDMA ′ s three step cell search is studied in this paper The effect of frequency error on initial cell search is fully considered Optimal algorithm for each step is introduced

对WCDMA三步小区搜索各步的实现算法进行了研究，充分考虑了频差对初始小区搜索的影响，给出了各步优化的实现算法

The frequency error canceling method was employed to achieve stable low-IF signal , which excluded the frequency offset from microwave local oscillator and kept the phase relationship between two input signals .

利用频率误差对消的方法，获得了稳定的低中频信号，不包含微波本振源的频率偏移且保持了2路输入信号之间的相位关系。

In this study , objective function can be established using frequency error , modal assurance criterion and residual force vector combined with different weight value , structural damage were identified by using updating the structural parameter model .

在分析中，将频率误差、模态置信度以及残余力向量（residualforcevector）以不同权重值组合从而建立目标函数，利用IFHSA逐步实现对结构参数模型的修正，进而对结构损伤进行识别。