One method is phase difference correction of partly FFT; the other is FFT frequency correction with quadratic interpolation.
一是利用分段FFT的相位差修正算法，二是基于二次内插的频率FF T校正法。
A new virtual calibrator for instrument transformer is presented. A phase difference correction method is applicable to correct electronic instrument transformer.
介绍了一种新型的虚拟互感器校验仪，它采用相位差校正法解决了校验电子式互感器的问题。
Compared with the original two kinds of Phase-Difference Correction, only one sequence of time-domain signal is sampled and FFT analysis of same points is performed twice in this method.
与原两种相位差法相比，这种方法只采一段时域信号，且进行两次相同点数的FFT分析。
In this paper, a phase difference correction method is presented to correct the power frequency. This method has strong anti-disturbance capability by theoretical analysis and simulation.
理论分析和仿真表明这种方法具有较强的抗干扰性，其频率测量精度主要与信噪比、频率偏差及采样数据的长度有关。
On the basis of this method, and taking advantages of the methods-time-domain translation as well as the window length change, the uniform formula for the phase difference correction is derived.
在此基础上，将窗中心平移法与时域平移和改变窗长法综合应用，推导出相位差校正的统一公式。
A new code acquisition method based on phase difference correction of FFT is presented to solve the problem of long code acquisition time in high dynamic DSSS receivers having large frequency offset.
针对大频偏下高动态直扩接收机伪码捕获时间长的问题，提出了一种新的基于FFT相位精确估计频偏的改进方法。
A correction algorithm for shape difference is given according to the influence of shape difference and generalized image error on positioning accuracy of micromanipulation.
根据形状差异和广义图像误差对微操作定位精度的影响，给出了形状差异的矫正算法。
The relation between the explicit difference solution and the implicit one is established. A correction difference solution with higher accuracy is constructed by the use of asymptotic expansion.
首先讨论了隐差分解与显差分解的关系，并利用差分解的渐近展开式构造差分校正解来提高精度。
In different measurement systems, the error correction effect is also different for the difference method and the ratio method.
差值法与比值法对不同测量系统的误差修正效果不一样。
Through the suitable selection of difference quotient and correction of the one-dimension inaccuracy linear searching, scope of the improved method is extended.
从应用角度出发，首先，将约束变尺度法改进为一般约束条件，通过适当选择差商形式和对一维不精确线性搜索方法的修正，扩大了该方法的适用范围。
The grid generation technique, difference scheme of convective and diffusive terms, pressure and velocity correction methods and arithmetic of nonlinear equations are determined.
确定了本文数值模拟所采用的网格的生成技术，对流扩散项的离散格式，压力修正与速度修正方法，以及非线性代数方程组的求解方法。
Some processing methods such as image-difference processing, multiple field accumulation and K factor correction as well as the flowchart of practical programs are described.
叙述了象差处理、多场累积和K因子校正等主要处理方法，给出了应用程序的流程图和处理结果。
The interrelated factors of the error caused by sonic flowmeter using the time difference by hydrodynamics were analyzed, and the correction method was introduced.
运用流体力学原理，分析了利用时差法进行超声波流量检测时误差产生的相关原因，并提出了修正方法。
The third method is also three-steps algorithm, the difference between the second method and the third method is making a correction on the fine grid.
第三种算法也为一个三步格式，与第二种算法不同之处在于它是在细网格上作进一步校正。
Finally, the paper made correction of interface influence for inverted time difference and calculated the porosity parameter with higher resolution and as consistent with real situation.
最后，对反演的声波时差资料进行界面影响校正，进而计算出较符合实际情况的孔隙率参数。
When the fetuss head is floating or half - fixed, the success rate of position correction is higher, significant difference was found (P< 0.05) .
胎头浮或半固定矫正胎方位成功率高，相比差异有显著性（P<0.05）。
We calculated the one - loop correction of W - N theory with unitary approach and H - N theory with covariant approach, then discussed the difference between the two approaches.
本文运用协变方法和么正方法，分别给出了W-N理论和H-N理论量子宇宙波函数的单圈修正；并且讨论两种算法的差异性及矢量-张量引力理论的可行性。
The principle of spectrum correction based on difference is studied. A novel method by use of phase phase difference, namely the method of translation of window center is proposed.
研究了基于相位差的频谱校正方法的基本原理，提出一种利用相位差校正的新方法———窗中心平移法。
Two methods for high speed correction are presented for area measurement and the difference between them is discussed.
针对面积测量，介绍了两种快速校正方法，并进行了比较。
With correction of phase difference for the max peak, the amplitude and phase of each order frequency can be acquired. At last, the holospectrum was synthesized.
仿真及对柔性转子试验台振动信号的分析结果表明，基于频谱细化和相位差校正的全息谱能有效提高其分析精度，更加精确有效地诊断旋转机械的故障。
With correction of phase difference for the max peak, the amplitude and phase of each order frequency can be acquired. At last, the holospectrum was synthesized.
仿真及对柔性转子试验台振动信号的分析结果表明，基于频谱细化和相位差校正的全息谱能有效提高其分析精度，更加精确有效地诊断旋转机械的故障。
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