The results demonstrate the cross correlation filter not only can suppress random noise in GPR signal but also confirm exactly the onset of reflection wave.
结果表明:应用该文所介绍的处理方法不但能有效压制探地雷达信号中的随机干扰而且能精确确定反射波的起跳点。
According as principal of cross-correlation, the hardware circuit is used to restrain noise efficiently and acquire faint change of crack signal.
根据互相关原理,设计了相应的硬件相关电路,有效的抑制了噪声并能够提取缺陷信号的微小变化量。
Thus, the 2-dimension cross ambiguity function is a surface form of fractional correlation for 1-dimension signals, each signal is associated with the Angle of observation over the surface.
因此,二维交叉模糊度函数是一维信号分数相关的表面形式,每一信号都与表面观察的角度有关。
The time-domain filter can then be used to select the narrow central portion of the cross correlation function (CCF), capturing virtually all of the signal but rejecting most of the noise.
对相关函数进行时域滤波,挑选出互相关函数中窄信号自相关函数部分,去掉剩余的大部分噪声能量,得到加窗互相关函数(CCF)。
A detection method for weak signal with coherence average is presented, and the principle of cross-correlation detection is introduced.
提出了采用相干平均法提高信号的信噪比并检测微弱信号的方法,介绍了相关检测的原理。
In this article, I choose to study the evaluation methods of the efficiency of the models of signal processing and put forward the evaluation criterion of cross correlation.
本论文选择了对信号处理效果的评估方法进行研究,并提出了互相关评估准则。
The nonlinear response in the bistable system with a random binary signal by adding the variable amount of noise is studied, and the input-output cross-correlation coefficient is measured.
研究了噪声和随机二进制信号同时激励双稳系统时的输出响应,并测量了输入输出互相关系数。
This paper introduces cross-correlation detection theory and maximum likelihood theory and based on the two theories, puts forward a new method for weak signal detection.
简单介绍互相关检测的原理及最大似然理论,并在此基础上,提出了将互相关检测与最大似然理论相结合检测弱信号的新方法。
The improved algorithm uses cross-correlation between cyclic prefix and a special sub-vector from vector of received signal to implement channel blind estimation.
改进算法利用接收信号向量中的循环前缀与一个特定子向量作互相关来对信道作盲估计。
This method includes the following steps: 1. Obtain time polynomial of signal using cross correlation in a time-space window, the polynomial determining the phase times of signal on all traces;
此法的第一步是在信号时-空窗内用多道互相关确定信号时间多项式,此多项式决定了各道的信号相位时间;
With the problem of noise disturbance in leak detection and location of pipeline, a signal process method based on empirical mode decomposition (EMD) and cross-correlation was presented.
针对长输管道泄漏检测与定位中噪声干扰问题,提出了一种基于EMD分解和相关分析的管道泄漏检测与定位方法。
With the problem of noise disturbance in leak detection and location of pipeline, a signal process method based on empirical mode decomposition (EMD) and cross-correlation was presented.
针对长输管道泄漏检测与定位中噪声干扰问题,提出了一种基于EMD分解和相关分析的管道泄漏检测与定位方法。
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