The extraction of signal embedded in frequency band of chaotic background is always an important and difficult problem in chaotic signal processing field.
针对强混沌背景中频带内信号难以提取这一问题，提出了基于正交小波变换与小波软阈值滤波相结合的方法。
The ultrasonic echoes of welding flaws for three types of pressure vessel are analyzed for feature extraction of signal processing using higher-order spectrum method.
针对焊接缺陷超声检测中信号处理的特征提取问题，应用高阶谱方法对三类压力容器焊接缺陷的超声回波信号进行了分析。
The digital realization of monostable circuit and extraction of bit-synchronous signal with digital phase lock loop are also introduced in detail.
对于其中的单稳态电路的数字化和数字锁相环提取位同步信号也进行了详细的设计说明。
This paper discusses extraction of the bit-synchronous signal with a first-order ADPLL mainly.
本文主要以一阶环为例讨论位同步信号提取。
In the view of feature signal extraction, the local wave time-frequency analysis and information entropy were used to deal with fault diagnosis.
从特征信号提取的角度出发，采用局域波时频分析和信息熵结合的方法进行往复式压缩机故障诊断。
The simulated extraction of weak frequency variation signal is carried out with the expressed Resonant frequency locking property when system transits from chaotic to great periodic motion.
利用系统从混沌状态到大周期转变时所表现出的共振锁频性质，进行了微弱频率变化信号的仿真提取。
Due to high temporal and frequency resolution and high energy focus, the accuracy of fault signal feature extraction is greatly improved by WVD.
WVD很高的能量聚集性和很好的时频分辨率，极大地提高了故障信号特征提取的准确度。
The initial research results of measurement principle, signal collection and characteristic parameter extraction etc, are introduced in this paper.
本文对检测的基本原理、信号采集与特征参数提取等初步研究情况做了介绍。
In addition the application of STFT for base band analytic signal based frequency hopping signal recognition, tracking and parameter extraction is investigated.
另外研究了STFT在基于基带解析信号的跳频信号识别、跟踪、以及参数提取中的应用。
Theoretic description and application of the expression of object features, and formation and extraction of feature signal are presented in this paper.
文章给出了对象模式特征的表述、特征信号的生成与提取的理论描述和实现方法。
In the research of the transient visual evoked potential (VEP) based brain-computer interface (BCI), VEP signal extraction and recognition are essential for obtaining BCI control signal.
在基于瞬态视觉诱发电位的脑机接口研究中，通过视觉诱发电位信号的提取与识别产生脑机接口控制信号。
By researching on the theory of the signal sudden change token by wavelet, this paper provides the principle and algorithm of audio signal pitch extraction based on wavelet principle.
通过对小波变换表征信号突变原理的研究，给出了基于小波变换的音频信号基频提取的原理和算法。
The signal modulation of velocity deception jamming is complex, and it is hard to complement anti jamming using the statistical feature extraction method.
速度欺骗干扰因信号调制较为复杂，难以用统计特征提取方法来实现抗干扰。
On the basis of analyzing the basic features of impact signal noise from reactor loose parts, the wavelet nonlinear threshold value filtering method for the use of impact signal extraction is studied.
在分析反应堆松动部件冲击信号噪声基本特征基础上，利用小波非线性阈值滤波方法对冲击信号的提取进行了研究。
In the paper, the calculating method of signal extraction filter pass-band according to the paper-counting speed and the utility circuit of separating strong interference in pass-band are given.
并针对点钞速度给出了信号提取滤波器通频带的计算方法，以及在带内分离强干扰的实用电路。
One is the detection of low SNR DSSS signal and extraction of length of PN code, the other is detection of BPSK signal from multi signals.
对直扩信号侦测的计算机模拟结果表明，该方法不仅能检测到低信噪比的此类信号，而且能提取到扩频码周期等参数。
A wavelet domain singularity detection algorithm, based on the theory of pulse extraction, is applied in partial discharge (PD) pulse extraction utilizing the singularity of PD signal.
在提出脉冲提取思想的基础上，利用局部放电信号所固有的奇异性特征，将小波变换的奇异性检测原理应用于提取局部放电脉冲。
By studying the principle of hearing system in identification of sound signal, a method of feature extraction for passive sonar target based on critical band spectrum energy is proposed.
利用被动声纳目标辐射噪声特征主要集中在低频部分的特点，结合听觉系统识别声音信号的原理，提出了一种被动声纳目标临界频带频谱能量的特征提取方法。
The extraction theory and method of fault signal jump omen based on multi-resolution analysis are introduced, and a simulation example is presented.
介绍了针对幅值突变信号及一阶微分有突变的信号利用多分辨分析进行突变征兆提取的理论及方法，并给出了仿真实例。
This paper introduces the principle, scheme of signal extraction, design of the software and hardware about the on-line monitoring device of the leakage current.
介绍了泄漏电流在线监测装置的原理、信号抽取方案和软硬件设计。
The digital receiver can avoid above problems effectively. It can keep all characters of signals and realize the signal feature extraction, separation and recognition with digital signal processors.
而数字接收机则可以有效避免这类问题，它可以保留信号的全部信息，采用数字信号处理器对输入信号进行特征提取，分选和识别。
Blind Sources Separation (BSS) provides a new alterative for extraction of certain signal components in the signal corrupted by noise, and presents a new method for mechanical fault diagnosis.
盲源分离应用于机械振动信号的预处理中，提供了一个新的处理机制，在机械状态监测和故障诊断中具有一定的价值。
It is introduced in the feature extraction of the vibration signal induced from reciprocating machinery valve, and t.
提出了一种自适应提取往复机械振动信号冲击特征的信号处理方法。
With a simulation experiment, the signal of tire burst is gained from the piezoelectric sensor. Then design a feature extraction circuit unit, also with the safety circuit.
由爆胎模拟实验得到了爆胎信号特征，由此提出了由爆胎特征提取电路、安全电路、逻辑判断电路、点火电路组成的控制器设计原理及压电供能的设计方法；
There are no direct signal values of every spot in the images. So image processing and intensity extraction should be done to obtain relevant datas.
图像文件中并没有直接信号值，如靶点强度值、背景强度值等信息，必须通过图像处理提取才能得到各靶点的相应数据信息。
The digital signal processing techniques were used on the DSSS signal simulation and verification feature extraction. And the performance of each detection and advantages and disadvantages were given.
采用上述数字信号处理技术分别对DSSS信号进行特征提取的仿真和验证，并给出了每种检测技术的性能及优缺点。
The basic function of this program is the signal to Fourier transform, and the simultaneous extraction of his time domain and frequency domain characteristic values.
说明：本程序的基本功能是对信号进行傅里叶变换，并同时提取出他的时域和频域的特征值。
This paper goes on the rolling bearing as the research object, researching the new theories and methods of bearing fault signal feature extraction.
本文以滚动轴承为研究对象，应用新理论，提出轴承故障信号特征提取的新方法。
The feature extraction of partial discharge signal of transformer is the front research project in online monitoring and diagnosing high voltage insulation failure.
大型电力变压器局部放电信号的特征提取是电气设备绝缘在线监测及故障诊断技术领域的前沿研究课题。
The water-cooling system is very important for the safe operation of generator. The water leakage detection of the system is typically a problem of weak signal extraction under strong disturbances.
发电机内冷水系统是发电机组安全运行的一个重要组成部分，其渗漏监测是在强干扰下弱信号的识别问题。
应用推荐