首先通过跟踪平稳噪声能量，检测能量变化非平稳的信号；
First, the noise energy is tracked to detect the unstable signal.
方法能有效地提取平稳的周期波形和非平稳的冲击衰减响应。
By using the proposed method, both the periodic and the impulse response waveforms can be separately extracted from the signal.
同时，该方法可对相关性非平稳的相关信源提供灵活可变的编码速率。
On the other hand it makes coding rate varying adaptively with correlation of the correlated sources with asymmetrical statistical dependency.
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.
数值实验表明，SVR方法对非平稳的金融时间序列具有良好的建模和泛化能力。
Numerical test results show that SVR has good ability of modeling nonstationary financial time series and good generalization under small data set available.
非线性，非平稳的时间序列经过经验模分解，可以得到一组内模函数和一个基本的趋势项。
Nonlinear and nonstationary time series are decomposed into a series of instrinsic mode functions and a residual trend item by the empirical mode decomposition (EMD).
实验表明：该方法能够有效预测非平稳的服务器负载序列，预测精度明显高于传统预测方法。
Experiments results show that this method can predict non-stationary server load series efficiently and has higher prediction accuracy than traditional methods.
由于股票预测是不确定、非线性、非平稳的时间序列问题，传统的方法往往难以取得满意的预测效果。
Because stock forecasting is a uncertain, nonlinear and nonstationary time series problem, it is difficult to achieve a satisfying prediction effect by traditional methods.
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.
本文分别从平稳的实际变量系统和非平稳的名义变量系统两个角度来考察出口贸易对中国经济增长的影响。
This Paper discusses the impact of export trade on China's economic growth by analyzing a stationary real variable system and a non-stationary nominal variable system separately.
然而，现实中的信号大多是非线性、非平稳的，并且数据长度有限，这使得分析处理此类信号成为一项复杂的工作。
While in the real world, signals are often nonlinear and non-stationary and their length is often very short, which makes the processing of such signals a difficult task.
由于小波变换有效地克服了傅氏变换在处理非平稳的复杂信号时所存在的局限性，因而在图像与信号处理领域受到了广泛的重视。
Due to wavelet transforms efficiently overcoming the limitations of Fourier transform in dealing with unstable and complicated signal, they are popular in image compression and signal processing.
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.
在考虑多通道非平稳信号干扰及背景噪声的情况下，提出了基于自适应参数型时间延时估计方法。
Taking into account the multi channels disturbance and noises with the non stationary characteristic, time delay estimation based on adaptive parametric approach is proposed.
应用虚拟激励法与伽辽金法相结合，分析弹性圆拱在非平稳水平随机地震作用下的随机响应问题。
The nonstationary random response of elastic circular arch under horizontal seismic excitation was studied by the method combining the pseudo-excitation algorithm with Galerkin algorithm.
它可统一处理平稳或非平稳arma信号的最优滤波、平滑和预报问题。
It can handle the optimal filtering, smoothing and prediction problems of stationary or non -stationary ARMA signals in the unified framework.
实验结果表明，该法是分析处理具有时变谱特性的非平稳信号的一种有效方法。
Experiments show that the technique is effective for processing unstable signals of time-variation spectra.
求出了频率响应函数以及输入为平稳和非平稳情况下的功率谱函数。
The frequency response function and the power spectrum function for stationary and non-stationary inputs are obtained.
脑电信号是极其复杂的非平稳信号。
移动的修正周期图谱估计方法在实时处理和非平稳信号处理的场合中是常用的一种有效方法。
To modify periodogram by moving is a useful and effective method for either real time signal processing or non-stable signal processing.
将现场测得的非平稳振动序列通过ARIMA模型和标准化处理，转化成标准正态平稳时间序列。
Through ARIMA model and standardization, the non stationary vibration series acquired in the field were transformed to stationary time series normally distributed.
应用这些统计特征，可模拟出符合统计要求的基于非平稳时间历程的设计地震动。
Utilizing these statistical features, we can simulate the design ground motion founded on the theories of non-stationary time history.
非平稳时间序列的状态空间建模技术被用于陀螺漂移分析。
A state space approach for the modeling of nonstationary time series is presented.
因此采用能反映时频非平稳特性的时变谱密度(即局部谱密度)来描述地震地面运动是非常必要的。
Consequently, it is necessary to describe earthquake ground motion with local spectral density, which is time-dependent and can reflect the non-stationary characteristics.
这样，大大地简化了在一大类统计特性缓慢变化的非平稳随机载荷作用下的结构的寿命与可靠性估计问题。
Thus, the problem of estimating of the reliability of structures under a big class of nonstationary random loadings with slowly varying statistics can be simplified significantly.
跳频信号是典型的非平稳信号，必须采用非平稳信号处理方法。
Frequency-Hopping signal is a typical nonstationary signal and must adopt nonstationary signal processing methods.
从三次样条函数入手，提出一种新的适合非平稳数据分析的预测滤波器设计方法。
The paper presents a new method to design a predictive filter which suits to analyze non-stationary data.
从三次样条函数入手，提出一种新的适合非平稳数据分析的预测滤波器设计方法。
The paper presents a new method to design a predictive filter which suits to analyze non-stationary data.
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