为了抑制高频发射噪声引起的电磁波泄漏，就需要开发频率高损耗大的电磁波吸收材料，有效地吸收噪声能量。
Electromagnetic absorbing materials with high frequency and high loss are required to absorb the noise energy, aiming at restraining the electromagnetic leak induced by high-frequency emission noise.
阐明了潜用武器发射装置发射噪声控制研究的重要意义，归纳了潜用武器发射装置的分类以及武器发射噪声的主要来源。
We illustrate the importance of noise reduction of underwater weapon launch tube, and summarize the classification of underwater launch tube and the main sources of launching noise.
轮船的噪声可以干扰鲸鱼。为了融进这片海洋，也许轮船在制造噪声前，可以发射信号提醒鲸鱼我们的存在。
Loud noises from ships can disturb whales. To accommodate Marine life, perhaps vessels could emit signals before making a ruckus, warning whales to tune us out.
传呼机蜂鸣噪声小塑料筒发射出一个安静的。
Beepers are small plastic cones that emit a quiet beeping noise.
目的：了解畸变产物耳声发射（DPOAE）在监测噪声性聋方面的应用价值。
Objective:To understand the value of using distortion product of otoacoustic emissions(DPOAE)in monitoring noise induced hearing loss.
本文介绍了模态声发射检测技术的基本原理、信号特征、噪声剔除和源定位等内容。
This paper introduces modal acoustic emission evaluation technique, including its fundamental principles, signal characteristic, noise rejection and source location etc.
电磁检测方法主要有材料磁性量测、巴克好森噪声和磁声发射。
Magnetism measuring, Barkhausen noise and magnetic acoustic emission were often used for electromagnetic testing.
声发射源与接收讯号传感器间的距离以及环境噪声的电平是选择频带的主要依据。
The distance between the acoustic-emission source and the receiving transducer, and the background noise level are primary factors in selecting a particular frequency band.
首次研究白高斯噪声（AWGN）信道下超宽带无线电通信系统中单个数据包单元发射信号能量的优化。
In this paper, the optimization of the transmitted signal energy for a data packet unit in UWB radio communications in additive white Gaussian noise(AWGN) channel is firstly investigated.
由表面发射激光放大器和检测器组成的光接收器的噪声因任何增益的非均匀性而增加。
The noise of an optical receiver consisting of a surface emitting laser amplifier and a detector is enhanced by any lack of gain uniformity.
煤与瓦斯突出前有征兆显现——煤体声发射，然而实际采样到的煤体声发射信号往往含有许多噪声，严重影响了预测可靠性。
There is a sign before coal and gas outburst-acoustic emission, but a lot of noise included in acoustic emission affects reliability of prediction severely.
本文研究了SA W线性调频信号的相位噪声对雷达发射机性能的影响。
In this paper, influence of SAW linear FM signal phase noise on radar transmitter is analyzed.
通过水池联调和海上实测验证，表明：模拟器除了能够发射CW、LFM等常用的水声信号外，还能够模拟产生具有特定特征的舰船辐射噪声。
Experiments on the test pool and open sea have proved that this simulator could not only transmit acoustic signals like CW and LFM, but also generate ship radiated noise with specific characteristics.
在PET重建的迭代过程中，此种负反馈迭代算法利用最近的一次重建图像来更新有噪声的探测到的发射正弦图数据。
Methods the CF iterative algorithm was applied to update the noisy detected emission sinogram data using the latest reconstructed image in the iterative process of PET reconstruction.
便携式火箭发射器所产生的冲击波和强脉冲噪声属非稳态信号，具有较宽的频率范围。
The shock wave and strong pulse noise, which produced by light rocket launcher, are belong to a non stationary signal process with a wide frequencies.
在正电子发射成像（PET）中，很多方法被用来抑制重建图像中的噪声效果，其中。
In positron emission tomography(PET) image reconstruction, regularization methods are used to suppress noise effects on reconstructed images.
基于混沌同步理论，设计出低噪声的混沌发射机和接收机电路，阐述了实现同步和保密通信的原理。
Based on the theory of chaotic synchronization, a chaotic transmitter and receiver circuit with low noise was proposed, and the principles of synchronization and secure communication were expounded.
本文主要以火箭发射时的遥测噪声数据为研究对象，探索研究了无损数据压缩技术在数据采集系统中的应用。
Taking the remote noise data as the object of the research, the paper discussed the application of lossless data compression technology in the field of data acquisition.
目的了解噪声对飞行员畸变产物耳声发射(DPOAE)的影响及其与纯音听阈的关系。
Objective to investigate the effect of noise on DPOAE in pilots and its relation with pure tone auditory thresholds.
围绕超高速这一特点，对系统的相位噪声、接收机噪声系数、发射功率、系统门限接收电平等作详细的论证，以确定总体设计方案。
Round the feature of the ultrafast speed, make the detailed description of phase noise, receiver noise figure, launch power, threshold level of system.
该方法是将干扰机接收并存储的雷达发射信号与噪声信号相卷积后转发出去。
The jammer receives the radar signal and convolves it with noise signal. Then the convolution result is retransmitted.
由于各种噪声的影响，以及声发射信号传播过程的复杂性，又给声源的识别带来一定的困难。
Because of the noise and complex of AE signal transmission characteristic, the recognition of AE source is very difficult.
实际星地光通信系统的发射光束为高斯型的情况下，跟瞄误差和大气闪烁是星地激光链路中的主要信道噪声源。
The transmitter beam is Gaussian for real satellite-ground laser communication system. The pointing jitter and atmospheric scintillation are the main noise sources for satellite-ground laser link.
该方法能够克服空间色噪声的影响，所估计参数自动配对且无阵列孔径损失，并且适用于发射和接收阵列不满足平移不变结构的情况。
This method can eliminate the effect of the spatial colored noise and pair the parameters automatically without array aperture loss, and is applicable to senor arrays without an invariance structure.
进一步考虑了发射源的指向性以及环境噪声的因素，同时分析了发射信号有效宽度对接收器检测性能的影响。
The directional source and environmental noise are further considered, and the effects of the effective length of transmitted signal on the receiver performance are investigated.
微波辐射计是一种无源微波测量装置，它本身不发射微波信号，只是被动的接收目标及环境辐射的随机噪声。
Microwave Radiometer is a passive microwave measurement device. It passively receives the random noise radiated by the objects and environment.
该系统以无线发射接收组件为核心，根据对鱼塘溶氧含量、噪声和温度的检测决定增氧机的启停。
The paper point out that wireless chips is regarded as core of the automatic controlling system.
本文分别以白噪声及扫频信号为信号源，采用计算机仿真软件MATLAB，对声波在声发射端和接收端之间的飞渡时间的互相关估计进行了计算机仿真研究。
In this paper we separately use White noise and chirp signal as signal source, and apply simulate software MATLAB to research the time delay between the transmitted signal and the received signal.
本文分别以白噪声及扫频信号为信号源，采用计算机仿真软件MATLAB，对声波在声发射端和接收端之间的飞渡时间的互相关估计进行了计算机仿真研究。
In this paper we separately use White noise and chirp signal as signal source, and apply simulate software MATLAB to research the time delay between the transmitted signal and the received signal.
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