采用负压波法检测管线泄漏信号。
The negative pressure wave method was proposed for a pipeline leak detection system.
在此基础上，研究了BP神经网络在泄漏信号识别和分类中的应用。
On the basis of above analysis, the application of the BP neural networks in leak signals identification and classification is made.
研究了埋地管道泄漏信号波的传播方程，泄漏信号频率特性以及衰减方程。
The buried pipe transfer equation, the frequency character and the attenuation equation of the leak signal are studied.
自适应对消器可以有效地消除雷达发射机宽带泄漏信号对雷达系统本身的影响。
Adaptive canceller is used to reduce efficiently effects of a broadband leakage signal in radar transmitter on the radar system.
从时域特征参数和频谱分析两方面对泄漏信号进行了分析，研究了泄漏信号的基本特征。
Analyses of the leak signals both in the time domain feature parameters and the spectrum analysis is made to seek some basic characteristics of the leak signals.
其关键问题在于掌握芯片运行过程中泄漏信息的机理，进而建立统计分析泄漏信号的信息泄漏模型。
The main problem of side- channel cryptanalysis is to grasp the in- formation leakage mechanism in chip, and to build information leakage model for leakage signal statistical analyzing.
上升趋势是存在内存泄漏的警示信号。
The upward-sloping trend is a telltale sign of a memory leak.
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。
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.
数据采集系统实现了泄漏音波信号的采集和传输。
The single chip system can transmit the leakage signal to computer and analyze the data.
提出一种利用信号对称拓展技术抑制离散傅立叶变换频谱泄漏的方法，实验证明是一种有效的方法。
The restrain method of DFT frequency spectrum leakage base on signal symmetry extension is proposed in this paper, experimental results show that this method is effective.
讨论了周期信号取样的时域频域特性、非同步取样引起的截断误差和频谱泄漏误差。
The time-frequency domain sampling characteristics of periodic signal, the truncation error and the spectrum leakage error caused by asynchronous sampling are discussed in detail.
针对信号谱分析计算中数据量过大，能量泄漏等问题提出了解决方案。
We figure out the problem of large data and energy leak in FFT.
采用快速傅立叶变换(FFT)进行电力系统谐波分析时，需要对采样信号截断并离散化，从而导致频谱泄漏和栅栏效应。
Fast Fourier Transform (FFT) is inevitable to cause the spectrum leakage and fence effect because of truncation and discreteness in signal collection.
为精确估计噪声环境中的信号频率和幅值，数学证明了全相位DFT优良的抑制频谱泄漏的性质。
To estimate signal frequency and amplitude exactly under noisy circumstances, the excellent property of all-phase DFT restraining spectral leakage is mathematically proved.
针对海底管道泄漏监测问题，基于信号检测原理分析了受噪声干扰的流量差观测序列。
Based on signal detection theory, the real-time leakage detection problem of submarine pipeline was discussed, by means of the observed series of mass flow difference of pipe.
该方法采集管网每个端点的压力信号，并基于模式识别的原理对管网进行泄漏检测与定位。
This method collects the pressure data from each ends, and detects and locates leak of the pipeline based on pattern recognition principle.
对视频脉冲信号经由多导体连接器孔隙电磁辐射引起的信息泄漏效应进行研究。
A study was conducted to investigate information leakage caused by the aperture video electromagnetic radiation from a multi_conductor connector.
该算法通过改进广义旁瓣抵消器结构中自适应算法，避免信号泄漏带来的不利影响。
The algorithm improves the adaptive algorithm in Generalized Sidelobe Canceller structure which degrades the affect of signal leakage successfully.
为了解决目前管道流量泄漏监测和定位问题，根据管道泄漏应力波和正常信号的区别，建立神经网络模型。
To solve the leak detection and location problem in pipeline flux, we built neural network model based on the difference of leak wave and normal signal.
本文基于负压波法检测管道泄漏的基本原理，提出了利用卡尔曼滤波算法对压力信号波形进行处理获得压力波形特征点的方法。
On the basis of suction wave method to detect pipeline leakage, the theses present that Kalman Filter can be used to get the featured inflection point of pressure wave.
搭建了报警装置的实验电路，可以检测到当有人通过泄漏同轴电缆时的信号变化。
I have built the experimental circuit, which can watch the signal changing when someone walked through the leaky coaxial cable.
以光滑函数的一阶导数作为小波母函数 ，研究了管道泄漏特征信号拐点区间的敏感性 ，突出小波变换系数的局部极值性。
The differential coefficient of smooth function was taken as a mother wavelet for researching the sensitivity segment of inflexion of pipeline leakage signal.
利用多尺度小波变换，把管道泄漏产生的负压波信号作为瞬态信号，来识别管道的局部泄漏特征。
Taking the negative pressure wave produced by pipeline leakage as a transient signal, the multi scale wavelet transform can be utilized to identify the pipeline leakage signal in local.
关于响应方面的注意事项为信号延迟、加窗的必要性以减少泄漏。
The response concerns lie with the signal decay and the need for Windows to minimize leakage.
理论上提出了泄漏模机制在SERS的激励和信号的收集中发挥着重要作用。
In theory, the leakage mode mechanism is presented in SERS exciting and collecting process.
通过采集这种声发射信号并分析处理，建立了检测锅炉“四管”泄漏的检测系统。
Meanwhile, through acquisition, analysis and processing to the sort of acoustic emission signals, the testing system for the leakage of "four tubes" of boiler will be set up.
监测系统工作原理是通过监测电缆放电信号和直流泄漏电流信号综合评估电缆绝缘状态。
The working principle of the developed monitoring system is to assess comprehensively the insulation status of DC feeder cable through monitoring discharge signal and DC leakage current signal.
监测系统工作原理是通过监测电缆放电信号和直流泄漏电流信号综合评估电缆绝缘状态。
The working principle of the developed monitoring system is to assess comprehensively the insulation status of DC feeder cable through monitoring discharge signal and DC leakage current signal.
应用推荐