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   noise ratio 在 无线电电子学 分类中 的翻译结果: 查询用时:0.185秒
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noise ratio
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  “noise ratio”译为未确定词的双语例句
    Optimization of Oarrier noise ratio of AM VSB CATV System Based on Erbium doped Fiber Amplifier
    基于掺铒光纤放大器的AM VSB CATV系统载噪比的优化
短句来源
    Based on the predicted interference and estimated path gain between the transmitter and receiver, transmission power is determined to achieve a desired signal to interference plus noise ratio (SINR).
    通过干扰预测和路径增益的估计 ,可确定合适的符合 SINR(signal-to-interference-plus-noise)要求的发送功率 .
短句来源
    CARRIER NOISE RATIO OF OPTICAL FIBER CATV SYSTEM INCORPORATING AN ERBIUM DOPED FIBER AMPLIFIER
    使用掺铒光纤放大器的光纤CATV系统载噪比的研究
短句来源
    The importance of FRA appears gradually when long distance transmission system of DWDM adopted largely because of its excellent features of distributed amplification, high gain, high output power, quick response speed, small non-linear influence, high signal noise ratio, et al.
    由于具有可分布式放大、增益高、输出功率大、响应速度快、可降低非线性影响、噪声特性好等诸多优点,因而,随着DWDM长距离传输系统的大量应用,FRA的重要性日渐显露。
短句来源
    Through the analysis results, we studied on the various factors that influence the signal to noise ratio (shorted for SNR). At last, the overall optimization was made on this instrument.
    当仪器装置完成以后,进行数百次的实际试验,对试验结果进行分析,并针对分析结果研究讨论影响检测能力的各种因素,最后对此台仪器进行总体优化。
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  noise ratio
Fast identification of digital amplitude modulation level at low signal-to-noise ratio
      
Simulation results reveal that the AR scheme with its decision algorithm outperforms the conventional and other modified TR schemes in generalized signal-to-noise ratio (SNR).
      
The SNR (signal-to-noise ratio) of the vibration signals of a diesel cylinder lid is the highest.
      
Identification of Discrete Linear Objects with a Large Signal-to-Noise Ratio
      
Methods for the conversion of image silver nanoparticles into luminescent products were developed; this considerably increased the signal-to-noise ratio of luminescence reading.
      
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By means of experimental analog and theoretical analysis, we have obtained a simple and reliable pulse edge discriminating circuit, which may elevate the signal-to-noise ratio to an order of magnitude greater than usual ones. When it is applied to a control system, the output is extraordinarily stable and thus there is no vibration due to the noise.

本文通过实验与原理分析,设计成一种简单可靠的脉冲边沿鉴别电路,可提高信噪比一个数量级,当用它去控制系统时,输出非常稳定,没有因噪音而引起的抖动。

For the TV Camera of the midical X--ray television vsed in low brightness, the signal to noise ratio S/N is a key problem. In this paper,wehave theoretically analysed the S/N of the Preamplifier, as a result, a newcircuit has been designed. The Components and transistors init are all madein China. Furthermore, the results obtained proved qvite satisfactoryat least with our bread--board. When the input current being 0.2 μApp,the frequency bandwidth 6MC and the output voltage 0.7Vpp, the S/Nranges from 45db...

For the TV Camera of the midical X--ray television vsed in low brightness, the signal to noise ratio S/N is a key problem. In this paper,wehave theoretically analysed the S/N of the Preamplifier, as a result, a newcircuit has been designed. The Components and transistors init are all madein China. Furthermore, the results obtained proved qvite satisfactoryat least with our bread--board. When the input current being 0.2 μApp,the frequency bandwidth 6MC and the output voltage 0.7Vpp, the S/Nranges from 45db to 50db.

对低照度使用的电视摄像机,例如医用X线电视,预放器的信噪比是很重要的问题,它是整机质量的关键。本文进行了理论分析,提出一种电路设计,全部采用国产元器件,制作了实验性电路板,获得了较好的结果。在输入电流0.2μA,频带宽6MC,输出0.7Vpp的情况下,信噪比皆处于45——50db的范围。(用美国UPSF信噪比测试仪测试)。

This paper presents an automatic gain control circuit in which the time constant varies continuously and automatically. Its physical process is first explained, and then its transient state and stable state are analysed. Finally it is pointed out that the system is a generalization of the general automatic gain control circuit in which the time constant is fixed. Not only can the system suppress high level interference pulse and its output dynamic range, but also ensure a sufficiently low countermodulation distortion...

This paper presents an automatic gain control circuit in which the time constant varies continuously and automatically. Its physical process is first explained, and then its transient state and stable state are analysed. Finally it is pointed out that the system is a generalization of the general automatic gain control circuit in which the time constant is fixed. Not only can the system suppress high level interference pulse and its output dynamic range, but also ensure a sufficiently low countermodulation distortion of useful signal at low level.An additional device is chiefly made up of the automatic gain control system of varying time constant. Connecting the device with the terminal of the short wave receiving equipment EKV-12, Berlin, 1975, it can lower error code rate by and raise signal-noise ratio by 10 dB with respect to the EKV-12.

本文提出了一个变时间常数自动增益控制电路,说明了它的物理过程,分析了它的过渡特性和稳态特性,从而指出这个电路是稳定的。它既能压缩动态范围,削弱高电平干扰脉冲,又能保证有足够小的反调制失真。文末还介绍了它的一个应用效果。

 
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