The theory of weak signal detect is the key technology in signal detect field, which is an integrated technology based on electronics, information theory, physics and computer science.
研究噪声中微弱信号检测的原理和方法，是测量技术中的综合技术和尖端领域。
Bilinear time-frequency transform possesses a high resolution both in the time domain and the frequency domain. It can be utilized to detect weak transient signal in complex background.
双线性时间-频率变换在时间域与频率域都具有较高的分辨率，有利于复杂背景条件下微弱瞬时信号的探测。
The proposed method excellently solves the technical problem that common instrument is difficult to detect weak signal.
这种方法很好地解决了通用仪器难于检测微弱信号的技术不足。
Using TFCC and correlation algorithms for processing of same practical vibroseis seismic data showed that the former could better suppress noises and detect weak reflection signal distinctively.
用TFCC算法和相关算法来处理相同的实际可控震源地震数据，显示前者能更好地压制噪声，并能清晰地检测到微弱回波信号。
A high speed data collector and buffer, applied to detect weak signal in strong noise, is described in the paper.
本文介绍一种在强噪声下弱信号检测中的高速数据采集缓冲系统。
To identify the signal of the weak reflected wave is a key problem to detect the thickness of the coal seam by using elastic wave.
弱反射波信号识别是声波法煤层厚度探测中的一个关键问题。
The measure circuits designed on relative principle can nicely detect optic weak signal and have characteristics of high dynamic response.
根据相关检测原理设计的检测电路，成功地实现了对微弱光信号的检测，并具有很高的动态响应。
So it is a very important study to detect the weak fluorescence signal especially when there is much noise.
测量微弱的信号，噪声成了巨大障碍，如何实现低噪声的探测是关键所在。
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 order to detect weak signals overwhelmed in noise, the method of signal detection is investigated using the principle of stochastic resonance.
针对淹没在噪声中的弱信号测量，利用随机共振技术进行了信号检测的研究。
Simulation and actual test result shows that the new arithmetic could detect weak laser pulse signal effectively, increase the SNR and expand measuring range of laser range finder.
仿真与实际测试结果表明，该方法能有效提取远距离微弱激光脉冲回波信号，从而提高系统信噪比，扩大了系统原有的测程。
According to the properties of signal and noise, we detect the weak laser pulse signal using the technique of correlation detection to reject noise and enhance signal-to-noise ratio.
根据信号的相关性和噪声随机性的特点，处理信号，抑制噪声，提高信噪比。
According to the properties of signal and noise, we detect the weak laser pulse signal using the technique of correlation detection to reject noise and enhance signal-to-noise ratio.
根据信号的相关性和噪声随机性的特点，处理信号，抑制噪声，提高信噪比。
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