电力系统在线监测中的检测信号含有大量的背景噪声，不便于检测。
Online monitoring of power system test signal contains a lot of background noise, not easy to detect.
该算法采用一种新的噪声检测方法将图像中的像素分为信号点和噪声点两类。
In the algorithm, a new noise detection scheme is adopted to separate the pixels in the image into signal pixels and noise pixels.
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.
由于混沌系统具有对小信号的敏感性及对噪声的免疫性等特点，使得混沌在信息检测技术中具有很好的发展前景。
Chaos system is sensitive to weak signals and immune to noise, which make chaos have good prospects in information detection technique.
根据仪表工作时各种随机干扰对检测信号影响大等特点，采用单片机将数据平滑方法用于液位检测信号数据处理中，有效地减小了各种随机噪声的影响。
Because there are various random interference affecting on detection signal, single chip computer is used for data smoothing to effectively eliminate the influence of random noises.
根据推导结果设计了一种从白噪声中检测周期性信号的算法。
We design the algorithm to detect periodic signal from white noise by the derivation.
强背景噪声中引信信号的检测，是引信信号处理中的一个重要课题。
The detection of fuze signal in strong background noise is an important topic in fuze signal process.
根据信号的循环平稳特性，本文提出一种加性高斯白噪声信道中基于循环频率估计的PS K信号存在性检测算法。
A presence detection algorithm based on the estimation of cyclic frequency for Phase Shift-Keying (PSK) signals in additive white Gaussian noise (AWGN) is proposed in this paper.
本文利用基于高阶累积量的盲信号分离方法，设计了相应算法，成功地从被噪声污染的信号中恢复源振动信号，从而可确保碰摩故障的检测和诊断能顺利进。
Blind separation of sources based on higher order cumulants is applied to the separation between vibration signal and noise, which is important to diagnosi.
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。
A high speed data collector and buffer, applied to detect weak signal in strong noise, is described in the 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.
在采用漏磁法对输油管道进行无损检测过程中，信号会受到各种噪声的干扰。
There are varying noises in output signal obtained from magnetic flux leakage nondestructive testing of oil pipeline.
试验结果证明，刀具破损前会出现预兆性的AE信号，并可把该信号从背景噪声中检测出来。
Tests show that AE signals may be detected from background noises in cutting process, a few hundreds millisecond before tool break down abrupt.
在采用漏磁法对输油管道进行无损检测过程中，信号会受到各种噪声的干扰。
There are varying noises in output signal obtained from magnetic flux leakage (MFL) nondestructive testing of oil pipeline.
针对超声无损检测中超声信号受噪声污染、信噪比不高的情况，提出了一种新的基于改进阈值函数的小波域超声信号去噪方法。
Aimed at the ultrasonic signal polluted by noises, which is low in SNR, a method of the ultrasonic signal denoising in wavelet domain based on an improved threshold function was put forward.
为了在不同噪声、信噪比下为基音检测算法提供更能准确反映基音周期实际变化的输入语音，本文将信号分解思想引入基音检测前端处理中。
In order to provide an accurate-pitch-cycle speech for pith detection algorithm with varied noise and SNR, we use signal decomposition theory in pre-processing of pitch detection.
语音信号的三阶累积量通常不等于零，因而可以用来检测噪声环境中语音的起始点和终止点。
Third-order cumulants of speech signals are not identically zero, so it could be used to detect the start point and end point of the voice under very noisy environments.
针对强噪声背景中的弱信号检测问题，在经典随机共振处理方法的基础上，利用小波良好的去噪特点，提出了随机共振加小波去噪检测弱信号的新方法。
Concerning the detection of weak signal in stronger noise background, a novel method was proposed in terms of stochastic resonance processing and by using the better de-noise feature of wavelet.
研究非高斯噪声中微弱瞬态信号的检测。
This paper deals with the detection of weak transient signal buried in non-Gaussian noise.
目的：探讨改善心电信号噪声干扰的方法，提高对心率变异信号中的RR间期检测精度。
AIM To investigate the method of decreasing the noise disturbance in electrocardiosignal and improve the test precision of RR interval in heart rate variability HRV signals.
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。
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.
埋藏在噪声中的正弦波，利用相关技术进行检测，能够测定信号的大小和相位。
Using correlative technique to detect the sine wave in yawp is a good method for picking up certain signal from yawp jam, which can determine the size and phase of signal.
对已有改进自适应算法性能进行分析，并尝试将其应用于有源滤波器谐波检测中。实验表明这些变步长算法的性能极易受到系统中噪声信号的干扰，改进效果不明显。
A number of conventional time-varying step size algorithms have been tried on the active filter, and experiments indicate that their performance is highly sensitive to the noise disturbance.
在轴承缺陷检测和诊断的过程中，有缺陷的轴承振动信号分散在一个较宽的频带范围，很容易被噪声和低频信号所掩盖。
In the process of bearing defect detection and diagnosis, the faulty bearing vibration signals are scattered in a wide frequency range, which can be easily masked by noise and low-frequency effects.
然而，边缘检测又是图像处理中一个困难的问题，因为实际景物图像中的边缘往往是各种类型的边缘以及它们模糊化后结果的组合，实际图像信号存在着噪声。
Because of the noise in the image signal and all kinds of fuzzy edge combined in the image, the edge detection is one of the difficult problem in the image processing.
工程中常遇到各类噪声信号，噪声存在于电子设备和系统中，它经常妨害长距离通信和检测弱信号的能力。
The abilities of long distance communication and weak signal detection are deteriorated by various white noises existing in the electronic instruments and system.
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。
In order to detect weak signals overwhelmed in noise, the method of signal detection is investigated using the principle of stochastic resonance.
随尺度增加，边缘和噪声的小波幅值表现出不同变化特性，从而在低信噪比的信号中检测出噪声和边缘。
Wavelet breadths of edges and noise display different identities with increasing of the scale, so edges and noise can be respectively detected from the signals of low signal-noise ratio.
随尺度增加，边缘和噪声的小波幅值表现出不同变化特性，从而在低信噪比的信号中检测出噪声和边缘。
Wavelet breadths of edges and noise display different identities with increasing of the scale, so edges and noise can be respectively detected from the signals of low signal-noise ratio.
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