查询词典 signal to noise ratio

When a noise signal is present, a pilot signal and noise signal passing through a capacitor are applied to the inverting input port of the subtracter via a second MOS transistor to cancel the noise signal contained in the composite input signal.

当噪声信号时，一个试验信号与噪声信号通过电容通过应用通过一个晶体管第二马鞍山到减法反相输入端口，取消噪声信号的复合输入信号中。

Agilent 54123T | HP54123T 34GHz, 4 passageways count word oscillograph An Jielun Brand: Oscillograph of 54123T of An Jielun of HP of HP of American An Jielun Agilent is undee indication instrument, it can be accurate the weaveform that describes telegraphic number, show in wide example application signal weaveform changes as the change of time, vertical axis is worth on behalf of undee voltage, horizontal axis represents time, the adjustment of brightness says for Z axis A kind of of oscillograph of An Jielun 54123T simple weaveform shows, the certain and special event that can help you discover to appear in telegraphic date weaveform, be like: Flatter pull Mou goes straight towards of Wei of ㄐ of haze of creek rapid pull to touch Su You to be worth lotus root of green of Lu of U of Fei of bursa post left-eyed flounder the sometime that " of?" drift part produces often in circuit weaveform paragraph or some part, whether does signal produce mutation and twist, the between change when noise signal and this noise signal containing to follow in the communication part that contains in signal and dc composition and undee signal Characteristic: The Gao Zhoubo with unapproachable * is characteristic * exceeds fanciful pulse width Converter of *12 digit model The lowermost time-interval of *0.25 skin second * is perpendicular and average measure mode Parameter of * automatic pulse is expressed * 4 passageways Voltage of time of * high accuracy is worth * HP attestation * for many times the brim sparks * time domain reflexes a function * digitlization filter

Agilent 54123T | HP54123T 34GHz、4通道数字示波器安捷伦品牌：美国安捷伦Agilent 惠普HP 安捷伦54123T示波器是波形显示仪器，它能正确形容电信号的波形，在宽泛的实例应用中显示信号波形跟着时候的转变而转变，垂直轴代表波形的电压值，程度轴暗示时候，亮度的调整称之为z轴安捷伦54123T示波器的一种简单的波形显示，能够帮助你发现电信号波形中呈现的某些特别事务，如：在某个时候和某个波形幅值之间呈现的一个异常震动信号，%26rdquo；漂移部门%26rdquo；相对频繁地发生在电路波形中的某一时候段或某一部门，信号是否发生变异和扭曲，信号中所含的交流成分和直流成分以及波形信号中所含噪声信号以及该噪声信号随时候的转变特点：*无与伦比的高周波特征*超乎想像的脉冲宽度*12位数模转换器*0.25皮秒的最低时候距离*垂直平均测量模式*主动脉冲参数表*四个通道*高精度时候电压值*惠普认证*屡次的边缘触发*时域反射性能*数字化滤波器

Agilent 54123T | HP54123T 34GHz, 4 passageways count word oscillograph An Jielun Brand: Oscillograph of 54123T of An Jielun of HP of HP of American An Jielun Agilent is undee indication instrument, it can be at can be accurate the weaveform that describes telegraphic number, show in wide example application signal weaveform changes as the change of time, vertical axis is worth on behalf of undee voltage, horizontal axis represents time, the adjustment of brightness says for Z axis A kind of of oscillograph of An Jielun 54123T simple weaveform shows, the certain and special event that can help you discover to appear in telegraphic date weaveform, be like: Flatter pull Mou goes straight towards of Wei of ㄐ of haze of creek rapid pull to touch Su You to be worth lotus root of green of Lu of U of Fei of bursa post left-eyed flounder the sometime that " of?" drift part produces often in circuit weaveform paragraph or some part, whether does signal produce mutation and twist, the between change when noise signal and this noise signal containing to follow in the communication part that contains in signal and dc composition and undee signal Characteristic: The Gao Zhoubo with unapproachable * is characteristic * exceeds fanciful pulse width Converter of *12 digit model The lowermost time-interval of *0.25 skin second * is perpendicular and average measure mode Parameter of * automatic pulse is expressed * 4 passageways Voltage of time of * high accuracy is worth * HP attestation * for many times the brim sparks * time domain reflexes a function * digitlization filter

Agilent 54123T | HP54123T 34GHz、4通道数位示波器安捷伦品牌：美国安捷伦Agilent 惠普HP 安捷伦54123T示波器是波形显示仪器，它能正确形容电信号的波形，在宽泛的实例应用中显示信号波形跟著时候的转变而转变，垂直轴代表波形的电压值，程度轴暗示时候，亮度的调整称之为z轴安捷伦54123T示波器的一种简单的波形显示，能够帮助你发形显示，能够帮助你发现电信号波形中呈现的某些特别事务，如：在某个时候和某个波形幅值之间呈现的一个异常震动信号，%26rdquo；漂移部门%26rdquo；相对频繁地发生在电路波形中的某一时候段或某一部门，信号是否发生变异和扭曲，信号中所含的交流成分和直流成分以及波形信号中所含噪声信号以及该噪声信号随时候的转变特点：*无与伦比的高周波特征*超乎想像的脉冲宽度*12位数模转换器*0.25皮秒的最低时候距离*垂直平均测量模式*主动脉冲参数表*四个通道*高精度时候电压值*惠普认证*屡次的边缘触发*时域反射性能*数字化滤波器

This thesis from the angle of signal detection, first theoretically gives out a RFOG closed signal detection design based on DSP. The signal detection system mainly includes related detection. signal conversion and the formation of feedback saw tooth. Related detection must guarantee signal synchronization sampling, and get the biggest signal noise ratio.

本文首先分析了谐振式光纤陀螺的基本原理和系统结构，并从信号检测的角度出发，从理论上给出了一个基于DSP实现的谐振式光纤陀螺的闭环信号检测方案，信号检测系统主要包括相关检测，信号的转换和反馈锯齿波的形成。

Circuit noise within the system: such as CRT deflection circuit power to the secondary emission of noise _ mother _ Sina fashion blog, fashion, mom, wedding photography network to provide in accordance with the relationship between noise and signal, image noise can be divided into additive and multiplicative noise two types of noise ...

系统内部电路噪声：如CRT的偏转电路二次发射电予的噪_时尚妈妈_新浪博客，时尚妈妈，婚纱摄影网提供按照噪声和信号之间的关系，图像噪声可分为加性噪声和乘性噪声两大类。。。

So we designed a adaptive synchronizing controller based on hereinbefore hardware environment: first a small magnitude reference signal r is outputted to system through the signal card (to ensure that the vibrating system works in a linear state), and this signal is sent to the moving coil of vibrator through the power amplifier, so vibration is produced through electromagnetic induction. Secondly the vibration signal can feedback to the data acquiring card in the servo system through the acceleration sensor on the Vibroseis reactor M〓 and the base-plate M〓, then the computer can get the current vibrating state y〓 of the coil of vibrator according to the feedback information from the data acquiring card, and give a real time comparing between the current state y〓 and the reference output y〓 of the set-in reference model with current reference input being r , then regulates the correlative controlling parameters according to the error e〓=y〓-y〓 till y〓→y〓, finally normal signal sweeping begins with a certain phase fixed. Meanwhile a synchronization signal for seismic signal record is sent to seismograph from synchronization signal outputting component in the Vibroseis system to perform the controlling process of synchronization of sweeping phases.

为此，我们基于以上的硬件环境设计了一个自适应同步控制器：首先通过信号发生卡对系统输出小幅度的参考信号r(从而保证振动系统工作处于线性状态)，信号通过前置放大器、功率放大器等送到激震器动圈，并通过电磁感应产生振动，振动信号通过可控震源激震器反应块M〓和基板M〓上的加速度传感器反馈给伺服系统中的数据采集卡，工控计算机根据采集卡的反馈信息，获取当前激震器动圈的振动状态y〓，并实时地将该状态与内置的参考模型在当前参考输入r下的参考输出y〓进行辨识，再将两者输出误差e〓＝y〓-y〓对系统的有关控制参数进行调整，直至y〓→y〓，最后在经过某一固定的相位后，开始信号的正常扫描过程，与此同时，由可控震源系统的同步信号输出部件向地震仪送出一地震信号记录同步信号，进而完成扫描相位同步控制过程。

A CW carrier signal, generated by Agilent Signal Generator, is transmitted to the subject, which reflects the modulated waves to the receiver antenna. The Agilent Spectrum Analyzer, with an under-conversion module inside, demodulates the received signal to 70MHz IF signal, which is then sampled by a ADC module in Agilent Vector Signal Analyzer. Digital quadrature demodulation is used to convert IF signal to baseband. We could finally get the respiration and heartbeat signal by further analyzing the baseband signal.

该系统由信号发射器产生载波，通过天线发射到被测物体；频谱分析仪内置的下变频模块将由物体反射回来的信号下变频到70MHz中频；中频信号经矢量信号分析仪采样，然后经过数字正交解调变频到基带信号；对基带信号进行滤波、FFT等进一步的数字信号处理后即可获得探测的心跳和呼吸信号。

Firstly, all the terms concerned are split up into basic term elements-termels, then eight aspects of quantificational indexes are given: errors-in-printing ratio,'inconsistent/uncanonical spelling' ratio,'unnecessary one-many/many-one correspondence' ratio,'inequivalent term' ratio,'discrepant interdisciplinary term' ratio,'unconformable-to-GB term' ratio,'incomplete/redundant term' ratio, and overall 'term worthy of revision/discussion' ratio.

其基本方法，一是从名词集中拆分出基础要素－名词元；二是提出八项量化指标：印误率，英语拼写不一致与不规范率，非必要的一多与多一对应率，英汉名词不对等率，与交叉学科名词有异率，与国标定名不符率，收词欠完备与冗余率及总体值得修榷率。

Position parameters were obtained from the simulation with the model of towed array.Based on the theory of radiated noise forming, the launch noise was simulated according to test condition in Laboratory,and the result showed the launch impulsion noise obeyed SαS distribution. The simulated noise attenuating in deep sea was analyzed with a sound loss translation model.Minimum variance distortionless response,spatially smoothed MVDR, and beam-space multiple signal classification algorithm were adopted to process the signal, hence the source level, the frequency structure and the location of the launch noise were achieved.

基于试验的实际情况，根据潜艇拖曳阵模型，仿真生成了各水听器阵元与本艇的位置关系；根据噪声源理论模型分析产生雷弹发射模拟噪声，利用SαS分布模拟武器发射冲击噪声，仿真分析模拟噪声在海洋环境中的传播衰减，对阵元信号分别利用最小方差无畸变响应法（MVDR 、空间平滑MVDR以及适应子带的波束域多重信号分类算法进行信号处理，得到发射噪声的声源级、频谱结构和方位。

According to singular entropy and Percent of contribution to total energy, the de-noising rank is obtained and the signal is reconstructed. The thesis compares reconstruct wave form of different reconstruct rank and the error of original signal and reconstruct signal is contrasted.According to voltage flicker measurement, voltage flicker detection method based on Mathe Matical filtering and Teager Energy Operator is proposed. The multiple MM filter filters out pulse noise and white noise contained in fliker signal, then the filtered signal is tracked accurately and quikly via TEO.

提出了基于数学形态滤波和TEO能量算子的电压闪变快速测量方法，含噪电压闪变信号经过多结构元素复合数学形态滤波后，采用TEO能量算子计算跟踪电压闪变信号的包络，得到的包络信号用Pisarenco谱分析方法获得闪变调制信号的幅值频率等参数，对不同情况下的电压闪变信号进行了仿真验证。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。