这对瞬态信号和变频率的非平稳随机信号分析尤为重要。
It is especially important for the analysis on transient signals and zion-stationary random signals with changing frequencies.
验证了时间序列分析方法在非平稳随机信号处理方面的可靠性；
The reliability of the time-series analysis method in processing unsteady random signals is verited.
该方法得到的趋向性序列能更准确地逼近非平稳随机信号的趋向性曲线。
The trend component series derived from this way can near more exactly the trend component curve of the variance-stationary random signal.
为适应现代工程技术的需要，介绍了平稳随机信号分析在微型计算机上的实现和应用。
In order to meet the technical requirement nowaday, this paper represents how to perform stationary stochastic signal analysis with microcomputer.
该方法简单、通用，是处理方差平稳随机信号的一般方法，且无需趋向性的任何先验知识。
This method, simple and commonly used, is the general method to process the signals, and any priori knowledge of the trend component is not need.
这种方法通过滤波器组将信号分解与重构，实现趋向性信号与零均值平稳随机信号的分离。
Based on decomposition and reconstruction of the signals by filter sets, the trend-signal is separated from stationary stochastic signals.
引入瞬时谱估计分析非平稳随机信号，以及应用于某型近炸引信数字仿真模型验证的一个实例。
Wigner distribution is introduced to analyze non stationary signal, and an application example of validating the simulation model of a proximity fuze is given.
该方法得大连理工大学博土学位论文到的趋向性序列能更准确地逼近非平稳随机信号的趋向性曲线。
The trend component series derived in this way can near more exactly the trend component curve of the variance-stationary random signal.
给出了循环平稳随机信号的LPTV时变参数信号模型及该模型参数与信号循环统计量之间的关系。
Present a time-varying parametric model that is LPTV type, and study the relationship between model parametrics and cyclostatistics of its ouput signal. ?
人体脉象信号是一种信噪比较低的非平稳随机信号，在分析脉象信号之前去噪是一项十分重要的工作。
The pulse signal is a kind of weak signal with lower SNR. Denoising the pulse signal is an important task before analyzing it.
由于局放信号属于弱脉冲信号，因此实现在线监测的首要问题是如何从强干扰中提取弱的非平稳随机信号。
PD signal is weak signal, so the first problem of on-line monitoring is how to pick up the weak anti-stationary random signal.
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.
管道泄漏声发射信号既携带结构的某些特征信息（泄漏孔大小和位置等） ，同时又有很大的随机性和不确定性，属于一种非平稳随机信号。
The AE signals of pipeline leak carry the information of structure integrity (the dimension and location of leak), which are random and uncertain, and belong to non stationary signals.
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.
脑电信号是非平稳的随机信号，其中包含了大量的生理和疾病信息，对于医生判断脑部是否有器质性的病变具有重要作用。
The signal of brain activity is a non-stationary random signal including lots of physiology and disease information, which is of important action for doctors to judge pathological changes in brain.
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.
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.
然后，从理论上分析了它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；
Then, The WVD function's mechanism of suppressing additive random noise in stationary random process is analyzed theoretically.
本文研究了非平稳随机振动信号的瞬时功率谱。
The instantaneous power spectrum of nonstationary random vibration signals is discussed in this paper.
提出一种在平稳随机噪声中检测暂态信号的循环双谱切片方法，同时给出仿真结果。
The method of detection on transient signal by the slice of cyclo bispectrum in stationary random noise is proposed in this paper, simulation results are presented also.
该文利用小波包变换的时频局部分析能力，研究了非高斯分布平稳随机噪声的统计特性，揭示了非高斯噪声信号的信号结构。
By exploiting wavelet packet transform to analyze signals both in time and frequency space, this paper researches the statistic property of non-Gaussian stationary noise and its signal structure.
在实际检测中，磁记忆信号属于随机信号、不具有平稳性，宜采用小波技术分析磁记忆信号。
In actual testing, magnetic memory signal belongs to random signal without stationarity, adjusting adopting wavelet technique to analyze magnetic memory signal.
众多的扩频通信抗干扰技术往往把有用扩频信号近似看作平稳随机过程。
In a lot of antijamming techniques for direct spread spectrum system (DSSS), the DSSS signal is approximately considered as a stationary 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.
心电信号是一种微弱低频的非平稳信号，具有随机性和噪声背景强等特点。
ECG signal is a weak low frequency non-stationary signal, and possessing random character and noisy setting strong character.
研究了一类非平稳信号具有随机幅度的多项式相位信号的时延估计问题。
A parameter estimation method of polynomial phase signals is studied in this paper.
结果表明，论文提出的从随机数据的平稳性和信噪比两个方面去评价桥梁环境振动响应信号质量是可行的，可以较好地评价实桥信号的质量。
The experimental results show that from stationary and SNR of two aspects on random data to evaluate the measured signal quality is feasible, can evaluate the real bridge signal quality preferably.
结果表明，论文提出的从随机数据的平稳性和信噪比两个方面去评价桥梁环境振动响应信号质量是可行的，可以较好地评价实桥信号的质量。
The experimental results show that from stationary and SNR of two aspects on random data to evaluate the measured signal quality is feasible, can evaluate the real bridge signal quality preferably.
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