这个问题来自平稳随机序列的相关函数。
This problem arises from the correlation functions of stationary stochastic sequences.
文中利用对称相关函数理论，分析了抵消平稳随机过程中与信号不相关的加性随机噪声的机理，并应用于线谱信号检测。
The theory of symmetrical function is used to suppress additive stationary random noise; assumption is that the signal and the noise are mutually uncorrelated.
假设输入函数为各态历经的平稳随机过程，得出各输出响应的谱密度与频率的关系。
The relations between spectrum densities of system output responses and frequency were obtained by assuming input functions to be ergodic and stable stochastic processes.
并用比较简单的方法给出二参数平稳无后效随机事件流的母函数的一般形式。
A general form of generating function of two parameter stationary streams of random events with independent increments is represented briefly.
地震动是由于地震引起的地面运动，其时间历程函数表现为具有突变特征的非平稳随机过程，因此更适于利用小波变换进行频谱分析。
The ground motion time function is a kind of time serial signals, which is a highly varying and nonstationary randow procedure and fit for wavelet analysis.
由于客人入住是一个随机过程，难以用准确的分布函数来描述，但作出某些合理的假设后，可将其变为平稳随机过程。
The registration of guest is in a random, it is difficult to describe by accurate distributed function, but it can be changed to stationary random process after making some rational assumption.
第二部分是有关平稳随机变量均值的函数表达式及其有关术语。
The second Part is about the exPression of Average stutistics. values for stationary chance variable and its terms concerned.
对于非平稳随机信号的功率谱分析，采用自相关函数傅里叶变换和直接傅里叶变换分析时，由于存在数据截断，二者从概念上都不能很好地反映随机信号的功率谱。
The correlation method and FFT method of the power spectrum estimation could not completely reflect the concept of the power spectrum of the non-stationary random signals because of data truncation.
对于非平稳随机信号的功率谱分析，采用自相关函数傅里叶变换和直接傅里叶变换分析时，由于存在数据截断，二者从概念上都不能很好地反映随机信号的功率谱。
The correlation method and FFT method of the power spectrum estimation could not completely reflect the concept of the power spectrum of the non-stationary random signals because of data truncation.
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