对具有无限方差的一阶自回归非平稳过程进行了研究。
We study the unstable autoregressive process for the first order with infinite variance.
给出了非平稳过程线性组合的首次超越动力可靠度的一个有效数值计算方法。
An efficient numerical method is proposed for calculation of the first crossing reliability of non stationary process linear combination.
给出了非平稳过程线性组合的首次超越动力可靠度的一个有效数值计算方法。
An efficient numerical method is proposed for calculation of the first crossing reliability of non stationary process linear combination. The results of an example showed, considering the instant...
其次，证明任何一个非平稳过程都可以用可数个调制非平稳过程来模拟或等效。
Some topics, such as the implication of non-station ary, equivalence of non-stationary random process, and power law process, are studied.
EMD分解法是一种自适应的信号处理方法，适用于分析非线性、非平稳过程。
The EMD method is a new method to analyze instability and nonlinearity.
在频偏误差的影响下对消误差为非平稳过程，传统自适应对消滤波器无法收敛 。
The cancellation error is nonstatio nary with the frequency offset error′s influence and the classical adaptive cancellation filter cannot converge to desired weight.
由于分解是基于信号时域局部特征的，因此它特别适合用来分析非线性非平稳过程。
Since the decomposition is based on the local characteristic time scale of the data, it is applicable to nonlinear and non-stationary processes.
这种算法对于时域或频域的考察都采取局部的方式，所以对于非平稳过程也一样十分有效。
This algorithm takes local modem both for spatial domain and frequency domain, therefore it is efficient for instable process, too.
地震动时程记录是一个明显的非平稳过程，不仅体现在时程幅值强度分布上，更体现在各频率成分上。
Currently, the traditional wave fitting processes makes the frequency of non-stationary greatly weaken, which oriented towards the goal of of response spectra for the intensity non-stationary fitting.
然而，语音信号是一个非平稳过程，因此适用于周期信号、瞬变信号或平稳随机信号的标准傅立叶变换不能用来直接表示语音信号。
But voice signal is an instable process, so standard FT that fit to the period signal and stable signal can not be express the voice signal directly.
动态测量是随测量时间而变化的非平稳随机过程，动态测量数据具有时变性、随机性、相关性和动态性四个基本特性。
The dynamic measurement is a non stationary random process varying with the measuring time. The dynamic measuring data have the characteristics of time variation, randomness, correlation and dynamic.
提出了一种通用性强、适用于广义平稳随机过程非均匀采样信号谱分析的新方法——采样间隔统计分析法。
A new method, the sampling interval stat. analysis method, was set up to analyze the non-uniformly sampling signal of the wide-sense stationary random processes.
影响特大型电网短期负荷的因素十分复杂，负荷变化属非平稳的随机过程。
Factors influencing the extra large power network are very complicated, and variation of load is of a non steady stochastic process.
建立一种非平稳随机过程整体推断方法。
An integral inference method for nonstationary stochastic process is established.
根据服役结构的特点，提出了服役结构抗力的非平稳随机过程模型。
Based on the features of existing structure, the nonstationary random process model of resistance for existing structure is proposed.
对于一个典型的地震记录，如果地震平稳段持续时间较短，采用非平稳随机过程描述其地震动特性较为合理。
For a typical earthquake record, if the duration of its stationary portion is rather short, such a record should be described in terms of a non-stationary random process.
多普勒超声血流信号是一个非平稳的高斯随机过程，其时频分布与血流的速度及其变化有密切的关系。
The Doppler blood flow signal is inherently a nonstationary Gaussian random process whose time-frequency representation associates with the time-varying velocity of blood flow and its variations.
经济过程中的结构突变，对非平稳时间序列的分析具有非常重要的影响。
The structure mutation during the economic process has very important influence on the analysis of non-smoothed time series.
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.
基于数据的第二种非平稳随机过程数学模型是第一种非平稳随机过程数学模型的继续。
The second nonstationary random process mathematical model, which is based on data, is the a modification to the first nonstationary random process mathematical model.
将非平稳时间序列的状态空间建模方法用于陀螺过渡过程的分析。
Stationary time series state space modeling method for the analysis of the transition process gyro.
本文讨论了运动介质的水声混响过程，在补偿了能量衰减之后，它仍是一非平稳随机过程。
In this paper, we discussed the underwater sound reverberation of moving medium, which is a non-stationary stochastic process even after compensating its energy attenuation.
地震动是典型的非平稳随机过程，其非平稳特性对结构响应影响极大。
Earthquake motions are regarded as the typical non-stationary stochastic processes, and such non-stationary characteristics influence the structural response greatly.
对分组交换网非平稳过渡过程的路由选择问题进行了分析。
A detailed analysis of routing decision in packet switching networks in a nonstationary transient environment is made.
探讨了利用非平稳随机过程理论和少量的实际风速记录模拟自然风，并以此作为桥址处的自然风用时域抖振分析方法对某系杆拱桥进行抖振时域分析。
Then by taking the simulation results as the natural wind in the bridge address, the buffeting analysis in time domain is carried out for an arch bridge of linking pole.
针对齿轮箱升降速过程中振动信号非平稳的特点，将常规的阶次分析与双谱分析技术相结合，提出了基于阶次双谱的齿轮箱故障诊断方法。
In order to process the non-stationary vibration signals such as speed up or speed down signals effectively, the order bispectrum technique was presented.
针对齿轮箱升降速过程中振动信号非平稳的特点，将阶次跟踪、角域平均和幅值、相位解调分析技术相结合，提出了基于幅值和相位解调分析的齿轮箱故障诊断方法。
In order to process the non-stationary vibration signals such as speed up or speed down signals effectively, the order tracking technique and Angle domain average technique were presented.
在高斯假定下得到非平稳时间序列的协方差矩阵的转移形式。对一个实际的地震过程进行的数字研究结果证明本文方法是有效的。
The transition of the covariance matrix of the nonstationary time series is obtained with Gaussian assumptions. An actual earthquake is studied by the method proposed and satisfactory res…
在高斯假定下得到非平稳时间序列的协方差矩阵的转移形式。对一个实际的地震过程进行的数字研究结果证明本文方法是有效的。
The transition of the covariance matrix of the nonstationary time series is obtained with Gaussian assumptions. An actual earthquake is studied by the method proposed and satisfactory res…
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