noise temperature
英 [nɔɪz ˈtemprətʃə(r)]
美 [nɔɪz ˈtemprətʃər]
噪声温度
双语例句
- Calculation of Noise Temperature Due to Reflector Antenna Ohmic Loss
反射面天线欧姆损耗噪声温度的计算 - The noise temperature is in the most favourable case given by the temperature of the receiver.
理想的噪声温度即是接收机的温度。 - A Calculation Method for the Output Noise Temperature of Standard Thermal Noise Source
一种热噪声标准源等效输出噪声温度的计算方法 - Antenna system noise temperature and antenna efficiency are the most important items in the system debugging and checking before the VLBI observation.
在流动VLBI的观测试验中，天线系统噪声温度和天线效率是观测前系统调试和检测的两项重要内容。 - Ratio of gain to noise temperature of an antenna
天线增益噪声温度比 - The utility model has the characteristics of light weight, small dielectric gain loss, low dielectric thermal noise temperature, small input voltage standing wave ratio, etc.
本实用新型具有重量轻、介质增益损失小，介质热噪声温度低、输入电压驻波比小等特点。 - The paper discusses the ambient and inner noise temperature, probing into how to improve the quality factor of receiving system, then the reception capability of Satellite television receiving system will be improved.
通过讨论环境噪声温度和内部噪声温度，探讨如何提高系统品质因数，从而提高卫星电视接收系统的接收能力。 - The Mixer Efficiency, and the Equivalent Noise Temperature Tm can be tested quickly and precisely in this way.
可快速、准确地测定混频器的变频效率η和等效噪声温度Tm； - Calculation of Equivalent Reflection Coefficient and Noise Temperature for Reflector Antenna with Partially Perforated Surface
部分为凿孔表面的反射器天线等效反射系数及噪温的计算 - Firstly, based on the calibration and measurement research of the microwave radiometer, this thesis analyses the character of the reverse-direction radiating noise temperature.
其次，本文在提出了降低逆向辐射噪声的方法后，研究了全功率辐射计的工作过程中逆向辐射噪声产生的影响，并做了系统的分析与仿真。 - The calculation formula of the equivalent reflection coefficient and noise temperature of reflector antenna with the partially perforated surface are derived by the reflection and transmission coefficients and the equivalent feed.
采用等效馈源及凿孔表面的反射与传输系数导出了部分为凿孔表面的反射器天线等效反射系数及天线噪声温度的计算公式。 - The diode intrinsic noise temperature of some milimeter Schottky mixer diode was measured and reviewed.
本文对一些毫米波肖特基势混频二极管本征噪声温度进行了测试和分析。 - A new model of dealing with solar radiating disturbance is put forward and a systematic explanation to the antenna noise temperature analysis in case of solar radiating disturbance is made.
在提出日凌干扰处理新模型的基础上，根据太阳视面与天线主瓣半功率点截面的相对运动关系，系统阐述了日凌时天线噪声温度的分析方法。 - The expressions show that the average brightness temperature of antenna aperture relates with three factors: coefficient of useful area for antenna, noise temperature of noise sources and reflective coefficient of noise sources.
该式表明，无耗天线口面的平均亮温度仅与三个因素有关：噪声源的噪声温度，噪声源的反射系数和天线的面积利用系数。 - Noise Temperature Measurements of Active Phased Array Receiving System
有源相控阵接收系统的噪声测试 - This formula has been applied to determine the available noise temperature of the thermal noise standard source.
该计算式已被用于确定热噪声标准源的资用噪声温度。 - Three subjects-UWB radar antenna, UHF/ VHF band receiver noise temperature, and the target detection from background, which are main factors in UWB SAR range equation, are studied.
从超宽带雷达天线、UHF/VHF波段接收机噪声温度以及最小可检测的信噪比三个方面研究了超宽带合成孔径雷达方程。 - An Example for Measuring the Conversion Loss and Noise Temperature of Mixers in Millimeter Wave Band
测量毫米波段混频器的变频损耗和噪声温度的一个实例 - Influence of Noise Temperature on Satellite Television Receiving System
噪声温度对卫星电视接收系统接收能力的影响 - The gain is about 30 dB. An automatic measuring instrument for noise temperature was designed.
增益约30dB。设计了一个噪声温度自动测试系统。 - This paper discusses the noise temperature ratio of a mixer diode operated at DC bias and AC signal.
本文讨论了混频二极管在直流偏置和交流信号激励时的噪声温度比，提出了以有效噪声温度比（tD）（eff）来表征二极管在交流激励下的噪声性能。 - The system provides two major functions including measuring noise temperature of low noise devices and calibrating the Excess Noise Ratio ( ENR) of solid-state noise sources.
该系统主要完成两大类功能：测试低噪声器件的噪声温度和校准固态噪声源的超噪比。 - This paper presents a way of inverse-direction radiating noise temperature calculation in microwave radiometer receiver. And two methods are given to reduce the radiating noise.
本文介绍了微波辐射计接收机逆向辐射噪声温度的计算方法，同时也给出了降低这种逆向辐射噪声温度的两种方法。 - An example for measuring the conversion loss and noise temperature of mixers in millimeter wave band by using the noise measurement method is discussed in this paper.
讨论了一种利用噪声测量的方法来确定毫米波段混频器的变频损耗和噪声温度的一个实例。 - Finally, the measurement results of the conversion loss and noise temperature of a balanced mixer in 8 mm waveband are also presented.
最后给出了八毫米波段半衡混频器的变频损耗和噪声温度的测量结果。 - The conversion loss and noise tempe-rature of mixers is determined by changing the IF noise temperature so as to change the noise temperature of the receiver system.
混频器的变频损耗和噪声温度的测量可以用改变中频部分的噪声温度使接收机的系统噪声温度变化来加以确定。 - An expression is presented, which can be used to calculate the effective output noise temperature of the combination of calibration source and feeding line as temperature dist-ribution of the latter is nonuniform, and its result is discussed.
导出了校准源的馈线温度非均匀分布时，校准源-馈线组合的有效输出噪声温度的计算公式，并对其结果进行了讨论。 - Parametric Amplifier Input Noise Temperature Degradation Caused by an Interfering Signal in or near the Paramp Passband
干扰信号对参放输入噪声温度的影响 - This thesis analyzed the characteristics of the radio propagation of satellite communication channel, especially the influence of rainfall for weakening signal efficiency and noise temperature of receiving system.
本文卫星通信信道的电波传播特性，重点分析了降雨对减弱信号效率，增加接收系统噪声温度的影响。 - With the rising of frequency, the influence to signals of all kinds of factors increases gradually, such as weakening the power of satellite signal, adding system noise temperature, reducing the rate of cross polarization identify.
随着频率的增高，降雨能引起卫星信号功率衰减、增加系统噪声温度，降低信号的交叉极化鉴别率。