过去的月震研究最主要的限制就是去除噪声，这些噪声由迭加信号在月球的分馏地壳结构中反复反射引起。
A primary limitation to past lunar seismic studies was the wash of'noise' caused by overlapping signals bouncing repeatedly offstructures in the Moon’s fractionated crust.
但微小裂缝、穿孔引起的涡流检测信号很微弱，容易被各种噪声湮没，分辨起来较困难。
The eddy current signals from thin flaws and perforations are merged by noises and difficult to be distinguished.
适配电路中的多级并联放大电路、带通滤波器对试车过程中的随机干扰信号，尤其是振动引起的噪声具有很强的抑制作用。
The multi-parallel- magnification circuits and the band-pass filter can well restrain random interfering noise, especially generated by test run vibration.
在调制信号前采用数据预编码，对接收信号进行相应译码，以消除信道中噪声引起的差错传播。
Error propagation caused by noise can be avoided by precoding the data at the transmitter prior to modulation and decoding operation of received signals.
对含有噪声的数字信号进行时频变换时，必然引起频谱误差。
Spectrum errors will occur when the digital signal is transformed from time to frequency domaim.
为了克服开环比较电路因噪声信号引起的多重触发，噪声环境中的比较电路设计宜引入正反馈采用迟滞比较电路。
In case of multiple transitions caused by noise, it is an efficient way to use positive feedback to introduce a small amount of hysteresis when designing comparing circuit.
同时本文还提出了一种平滑音调系数的插值后处理算法，该算法解决了瞬时突变噪声引起信号音调检测误判的问题。
This paper also deals with the problem of temporal energy surge of noise component in narrow band influencing the tonality detection with post-smoothing.
DWDM系统的传输质量受到线性和非线性两类效应引起的损害影响，导致光信号噪声比下降，误码率增大。
The transmission quality of DWDM system is affected by the damages from linear and nonlinear effects so the ratio of optical signal to noise is reduced and the bit error rate is increased.
其它波长的光需要被过滤以免产生背景噪声，引起成像质量下降或淹没被激发的荧光信号。
The other wavelengths need to be suppressed to avoid background noise that reduces image contrast and obscures the fluorescent light emissions.
正是这种被称为信噪比的东西，即真实信号与噪声的关系引起了通信工程师的极大的兴趣。从本质上讲，如果信号比噪声电平大得多，则信息的传输是完美的。
It is the relationship of the true signal to the noise signal, known as the signal-to-noise ratio, which is of the most interest to the communication engineer.
在一般的静息态功能连接分析时，首先需要对数据进行一系列预处理，以去除信号中的不感兴趣的噪声和干扰成分。这些预处理也包括近年来引起广泛关注和讨论的去全脑效应。
A common but controversial pre-processing step in the analysis of resting-state fMRI data is the removal of a global time-course that is the average of all the time-courses within the brain.
在一般的静息态功能连接分析时，首先需要对数据进行一系列预处理，以去除信号中的不感兴趣的噪声和干扰成分。这些预处理也包括近年来引起广泛关注和讨论的去全脑效应。
A common but controversial pre-processing step in the analysis of resting-state fMRI data is the removal of a global time-course that is the average of all the time-courses within the brain.
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