The noise factor analyzer's operation principle and the basic noise factor measurement method, Y factor method, are described.
论述了噪声系数分析仪的工作原理和噪声系数最基本的测量方法——Y因子法。
In the meanwhile, with using more accurate expression of the avalanche excess noise factor, we give a relation schema between sensitivity and dark current.
同时，采用了较为精确的过剩噪声系数表达式，给出了灵敏度与暗电流的关系曲线。
But there's another important factor in this process: background noise.
不过在这个过程中还有一个重要的因素：背景噪音。
噪音也是造成压力的一个因素。
Therefore, deeply investigating and analyzing the character of random noise in working area and its relation with working factor have practical implication to better guiding field data acquisition.
因此，深入地调查和分析工区内随机噪音的特征及其与施工因素的关系，对于更好地指导野外数据采集具有实际意义。
After the bandwidth and temperature, the remaining factor in determining the system noise is the effective source resistance.
讨论了带宽和温度以后，决定系统噪声的另一个因素就是等效源电阻。
The degenerative model is that original image was passed by operator or was acted on degenerative factor, and noise overlap-added, then, degenerated image was formed.
其退化模型是原始图像经过算子，或系统经退化因素作用之后和噪声叠加，以形成退化后的图像，即实际得到的图像。
The paper USES this technique to eliminate the noises in seismic exploration, and emphasizes analysis of the relationship between the noise conditions and the length of filtering factor.
本文将这项技术用于地震勘探中的噪声压制，重点分析了噪声条件与滤波因子长度的关系。
Besides multistage EDFA making the bandwidth reduced and noise increased, the material dispersion of optical fibers is also an important factor to affect WDM systems.
除了多级光纤放大器(EDFA)使带宽减小，噪声增大，光纤的材料色散也是对WDM系统影响的重要因素。
The influence of noise on identification precision, the effect factor of the computing precision and the reason of missing estimation some modes were analyzed and discussed.
从理论和试验两个方面分析和研究噪声对识别精度的影响，影响识别精度的因素，以及部分模态成分的模态参数不能够被识别的原因。
Noise scale factor is introduced and used to describe and process the standard deviation of photoelectrons of photodetector.
引入噪声比例因子来描述和处理光电探测器的误差。
Cooling the sample from room temperature (290k) to liquid nitrogen temperature (77k) decreases the voltage noise by approximately a factor of two.
将样品从室温温度(290k)降低到液氮的温度(77k)，可以使得噪声电压减小大约一半。
The noise index of YKK Series, which are the main export parts to power station (including nuclear power station), is an important competitive factor in international market.
作为我国电站（包括核电站）主要出口部件的YKK系列电机在国际市场上的竞争力受到噪声指标的影响。
This paper discussed the error in the measurement of noise figure—The method of Y factor , The error is caused by mismatch of RF attenuater and IF attenuater and the others in the measurement system.
本文讨论了常用的噪声系数测试方法—Y因子法中高频及中频衰减器本身失配和测试系统中其它部分的影响所造成的测试误差。
The noise in vehicles is not only important factor of influencing its comfort index but also one of important index of evaluating its quality.
汽车的噪声不仅是影响其舒适性指标的重要因素，而且也是评价其质量品质的重要指标之一。
Noise is the main factor influencing incipient rotor machine failure detection.
噪声是影响旋转机械早期故障检测的主要因素。
Many emphases are put on analyzing Y-factor method which is the most widely-used noise figure measuring method nowadays in practical engineering and study.
本文介绍了噪声系数的几种测量方法，重点分析了目前实际工程和研究中最常用的噪声系数测量方法—Y因子法。
High power factor, high efficiency, low noise, is the character that power supply and electronic equipment pursuing.
高功率因数、高效率、低噪音是电源装置和用电设备普遍追求的品质。
In modern radar and communication system, phase noise of local oscillator (lo) becomes a vital factor of system performance.
在现代雷达和通讯系统中，本振相位噪声越来越成为决定系统性能的关键因素。
Due to its relative low amplitude properties, the bioelectricity signal is easy influenced by surrounding factor, the amplifier with low noise and voltage offset is required.
由于生物电信号非常微弱，容易受量测环境及电路本身等因素所影响，故要求该放大器具有低噪声和低失调电压的性能。
Finally, the optimum weighting factor of each trace is determined with the signal amplitudes and noise covariance.
最后由信号的振幅和噪音协方差矩阵来确定每道的优化加权因子并作加权叠加。
Each sensor has its corresponding fuzzy factor and parameters of noise level.
不同的传感器对应不同的模糊因子和噪声。
The result shows that the rate of pressure rise and the heat release are the main dynamic load factor that affects the combustion noise.
研究结果表明：气体动力载荷因素中，压力升高率和放热率是影响燃烧噪声的重要因素。
The nonuniformity noise in the infrared focal plane array is a major factor which limits the quality of infrared image.
红外焦平面阵列的非均匀性噪声是制约红外成像质量的主要因素。
The method is to find out a fractional factor that makes the fractional differenced result closest to the white noise.
该方法实质是寻找一分数阶因子，使随机分形信号通过分数差分后的输出信号最接近白噪声。
The field image from an imaging sensor can be described as two parts, one is the ideal image multiplied by a fuzzy factor, the other is stochastic noise.
将它乘上一个模糊因子，再加上随机噪声，可用来描述某一个成像传感器中获得的场景图像；
The field image from an imaging sensor can be described as two parts, one is the ideal image multiplied by a fuzzy factor, the other is stochastic noise.
将它乘上一个模糊因子，再加上随机噪声，可用来描述某一个成像传感器中获得的场景图像；
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