热噪声

MOSFET的高频热噪声

High - frequency thermal noise in MOSFET

双张驰振荡SQUID的磁通－电压转换系数及热噪声

Flux to voltage transfer coefficients and thermal noise in double relaxation oscillation squid

C波段热噪声标准

Primary Noise Standard for C band

潜艇拖曳SQUID天线热噪声分析

Analysis of thermal noise of submarine towed SQUID antenna

在系统中使用了半导体致冷片和反馈电路构建了致冷电路，使CCD的温度保持在-20℃以减少热噪声；

Also , Pilter cooler technique are used to keep the temperature of CCD chip about - 20 ℃, reducing the thermal noise .

BOC调制伪码跟踪热噪声误差研究

Study on Thermal Noise Error of BOC Modulated PN Code Tracking

接收机中的噪声主要是电路中电阻的热噪声和MOS器件的闪烁噪声。

The noise mainly comes from the thermal noise of resistors and the flicker noise of MOSFETs .

潜艇ELF拖曳环天线的热噪声研究

Thermal noise on the submarine towed ELF loop antenna

脉冲LD测距系统的噪声主要包括热噪声、散粒噪声、背景噪声、暗电流噪声及放大器噪声。

Such noises include thermal noise , particle noise , background noise , dark current noise as well as amplifier noises .

如红外探测器、X射线、γ射线和亚毫米波探测器等须在低温下工作才能提高灵敏度，降低热噪声。

E. infra red detector 、 X ray γ ray and submillimeter wave detector etc must be operated in cryogenics , so as to improve sensibility and decrease thermal noise .

降低端面泵浦DPL热噪声的补偿法

A Compensation Way to Control Thermal Noise in End-pumping Solid-State Laser

等效输入热噪声7.137μV，电路带宽300kHz。主体部分功耗14.42mW。

The equivalent input thermal noise is about 7.137 μ V. The bandwidth is 300 kHz and the power dissipation of the main part of the circuit is 14.42 mW .

各种电子元器件，光电转换器件存在着各种各样的噪声，如散弹噪声、1／f噪声、热噪声在系统中还存在背景噪声等等。

There are all kinds of noises in electronic component and device , photo-translating device , e. g. shot noise , 1 / f noise , thermal noise and background noise in system etc.

采用数值仿真的方法研究了热噪声对约瑟夫森结I-V特性及微波感应台阶的影响。

Authors studied the influences of thermal noise on the I-V characteristics and Shapiro step of Josephson junctions by numerical simulation .

热噪声对RF-SQUID行为的影响

The effects of thermal noise on the behavior of RF-SQUID

对热噪声信道，表明了容量在输入信号为热噪声信号时达到，压缩态无助于达到信道容量CE；

For the heat noise channel , we have found that the capacity will be attained when input signal is heat noise and squeezed state is no useful for reaching the capacity .

为了保证随机序列的分布特性，针对CMOS电路中主要的噪声，即MOS管的热噪声与闪烁噪声，设计时建立了二种噪声仿真模型；

To verify the expected distribution of the random number generated by the circuit , the dominating CMOS noise was studied with two noise models ( thermal and flicker ) .

推导了在散粒噪声和热噪声存在时激光场几率分布的Fokker-Planck方程，得到了计及噪声时聚束和反聚束的判据。

Fokker-Planck equation of distribution probability of the laser field with the presence of shot noise and thermal noise is derived .

热噪声作用下损耗模式RF-SQUID磁通跃迁性质的研究

Flux transition characteristics of RF-SQUID in the deceptive mode in the presence of thermal fluctuation

研究发现，HBT的基区电阻的热噪声在光接收机前端放大电路的噪声中起主要作用。

The thermal noise introduced by the resistance of base region plays an important role in the total noise of the integrated photoreceiver front-end circuit . 2 .

本文计算和比较了Ge、Si、GaAs器件的热噪声、信号电压、信/噪比、得到了制造功率为10~（-10）W光电探测器的有效途径和实验方案。

Calculated and compared heat noise , signal voltage , signal-to-noise ratio of Ge , Si , GaAs devices , available approach and experimental plan for making noise equivalent power of 10 ~ ( - 10 ) W are obtained .

分析了GPS和Galileo接收机伪码跟踪热噪声的理论误差，可为GPS和Galileo接收机伪码跟踪算法性能评价提供参考。

The theoretical errors of PN code tracking in the GPS receiver and the Galileo receiver are respectively analyzed , which can provide reference for the evaluation of the PN code tracking algorithms of the GPS receiver and the Galileo receiver .

为了获得最小热噪声ENF，在电缆浮力条件下对天线参数进行了最优化。

To minimize the thermal noise ENF under the buoyant condition of the cable , the optimization of the antenna parameters is obtained .

合成孔径雷达（SAR）成像系统的热噪声和海杂波严重影响SAR图像自动目标检测的性能，去噪和均匀背景杂波是提高SAR图像目标检测性能的重要课题。

Since the heat noise of Synthetic Aperture Radar ( SAR ) imaging system and sea clutter severely affect the performance of automatic targets detection in SAR images , removing noise and homogenizing sea clutter in SAR images to improve performance of targets detection is a challenge for researchers .

本文叙述作者等研制的673.7K±1.5K、7/3.04mm同轴高温热噪声标准。

This paper reports on the 673.7K thermal noise standard for 7 / 3.04 mm coaxial system developed recently by the authors .

典型红外探测器噪声测试结果（包括背景噪声、热噪声、主片噪声、补片噪声以及总噪声）表明，本系统能准确测试并分析NTC型红外探测器低频噪声及其特征参数。

A typical noise test results of infrared detector ( including background noise thermal noise , the main piece noise , the noise patches and the total noise ), show that the system can accurately measure the low-frequency noise of NTC-type infrared detector , and analyze and their characteristic parameters .

为了评估抗三种噪声性能，即散射噪声、相位噪声（PIIN）和热噪声，本文研究了各种光谱幅度编码。

Various spectral amplitude codes are studied for evaluation with respect to their performance against three noises namely shot noise , thermal noise and phase induced intensity noise ( PIIN ) .

采用冷、热噪声Y因子法，在4.2K的铌结上测得的单边带混频器噪声温度，变频效率。

By applying T factor method of hot / cold noise , at operating temperature 4.2 K , we have obtained the best measured results with Nb-Nb point contact junction : the single side band noise temperature TM-100 K and the Conversion efficiency .

分析了主要噪声，即海面斑点噪声和接收机热噪声对高度估值的影响，通过对几种典型海况海面回波的模拟分析表明，系统则高精度可达±2cm。

The effects to height evaluation of the main noises , i.e. ocean surface backscatter speckle noise and receiver thermal noise , are analyzed . By analyzing the returned signals of several typical sea states , the results have shown that the system height measurement precision can be ± 2cm .

超低频拖曳磁场天线设计中的热噪声研究

Thermal noise on design of extremely low frequency trailing H-field antenna