The buried pipe transfer equation, the frequency character and the attenuation equation of the leak signal are studied.
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。
Given that plans always leak, that's a signal to watch for; a sudden rise in German bond yields.
介于计划总是会提前泄露，我们需要留心这一危险信号：德国国债收益突然增加。
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.
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。
Then we perform digital pre-compensation method, which can be used in the processing of base band signal to reject image frequency and protect carrier leak to meet the application purpose.
然后采用对基带信号的数字预补偿方法来抑制镜像频率和载波泄漏，从而达到应用的目的。
Pipeline leak detection based on the signal features of piezoelectric sensor is proposed.
本文提出基于压电传感器信号特征的管道泄漏检测方法。
Macro bending measurement, macro bends are the use of fiber-optic bending leak out when the weak optical signal, optical signal to detect the direction and intensity.
宏弯测量，宏弯是利用光纤弯曲时泄漏出微弱的光信号，通过判断泄漏的方向和强度来检测光信号的方向和强度。
In the signal into the A / D converter analog to digital conversion, the final processing of data into the microcontroller, then the output is displayed, and determine whether there is a gas leak.
在把信号送入A/D转换器进行模数转换后，将最后的数据送入单片机进行处理，随后输出显示，并且判断是否有煤气泄漏。
Then we perform digital pre-compensation method, which can be used in the processing of base band signal to reject image frequency and protect carrier leak to meet the application purpose.
其思路是将信号先通过单边带调制，将较低频率调制到需要的频率范围；然后采用对基带信号的数字预补偿方法来抑制镜像频率和载波泄漏，从而达到应用的目的。
With the problem of noise disturbance in leak detection and location of pipeline, a signal process method based on empirical mode decomposition (EMD) and cross-correlation was presented.
针对长输管道泄漏检测与定位中噪声干扰问题，提出了一种基于EMD分解和相关分析的管道泄漏检测与定位方法。
With the problem of noise disturbance in leak detection and location of pipeline, a signal process method based on empirical mode decomposition (EMD) and cross-correlation was presented.
针对长输管道泄漏检测与定位中噪声干扰问题，提出了一种基于EMD分解和相关分析的管道泄漏检测与定位方法。
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