difference correction method的意思|示意

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。

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。

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。

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。

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。

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。