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noise ratio
相关语句
  噪比
    Improving the signal/noise ratio of stacked 3-D seismic data by polynomial fitting method,and the trace interpolation
    3-D叠后地震资料多项式拟合提高信噪比和道内插
短句来源
    Comprehensive research on the techniques for high signal/noise ratio,resolution and fidelity
    高信噪比、高分辨率和高保真度技术的综合研究
短句来源
    Improving the signal/noise ratio of borehole side-seismic data by making use of VSP data
    利用VSP资料提高井旁地震记录信噪比
短句来源
    High-resolution data processing and high signal/noise ratio data
    高分辨率资料处理与高信噪比资料
短句来源
    By using this de-noise processing method,the signal to noise ratio of the stacking profile can be in- creased from 1.3936 to 2.1056.
    信噪比分析表明,经模拟退火独立分量分析方法去噪处理后,叠加剖面的信噪比由1.3936提高到2.1056。
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  “noise ratio”译为未确定词的双语例句
    In thick desert area, the main frequency of 45-50 Hz is used, about 15-20 Hz higher than the first-time 3D data, and signal to noise ratio and fidelity are sig- nificantly improved.
    在厚沙漠区,二次三维资料主频比一次三维高15~20Hz,达到45~50Hz,其信嗓比、保真度也有很大提高。
短句来源
    A new method for improving signal/noise ratio and resolution by dual direction prediction in frequency-space domain
    一种频率空间域双向预测提高信噪比及分辨率的新方法
短句来源
    In the basis of analyzing the character of different linear time-frequency method, a new method of time-frequency filter is developed to improve the signal noise ratio based on the generalized S transform method.
    在深入分析各种线性时频分析方法特点的基础上,本文提出广义高斯S变换时频滤波。
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    An analysis of the inductive interference mechanism of transmission system in sonic logging tools shows that a lower impedance of the transmission line is favourable for reducing inductive interference and raising signal/noise ratio.
    对声波测井仪传输线感应干扰机理的分析表明,降低线路阻抗有利于减小感应干扰、提高信号传输质量。
短句来源
    It is shown that the genetic algorithm very favours the inversion without borehole data restric-tion,and the inversion relating to low signal/noise ratio data.
    研究结果表明,遗传算法对处理无井进约束反演、含噪声资料的反演等比较复杂的问题,具有明显的优势。
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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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The present paper deals with an elementary principle of a new measurement of runoff with very low discharge by means of resistance measuring-flow, and the nonlinear Flow-Voltage relationships with the resistance measuring-flow. A method of linearization handling is provided to make the Measuring-Runoff Flume in a better linear relationship. The analysis of dynamic response charactertics of Resistance Measuring-flow Flume is based on system dynamics theory, as a result, system parameters ωn and ζ are obtained...

The present paper deals with an elementary principle of a new measurement of runoff with very low discharge by means of resistance measuring-flow, and the nonlinear Flow-Voltage relationships with the resistance measuring-flow. A method of linearization handling is provided to make the Measuring-Runoff Flume in a better linear relationship. The analysis of dynamic response charactertics of Resistance Measuring-flow Flume is based on system dynamics theory, as a result, system parameters ωn and ζ are obtained for judging regulating-storage of measuring-flow device' The Measuring-flow Flume has been applied to measure small discharge in the Hydro-logic Runoff Laboratory. As it belongs to instantaneous flow-rate measurement method, the runoff hydrography measured is very clear as regards its duration, peak discharge, lag of time, and relevant parameters. In addition, the device has a higher stability of electronic circuit and better signal-to-noise ratio, and the problem of electolytic action at electrodes surface due to impurity of the water has been solved, so it is more convenient to make research of the rainfall-runoff relationship in laboratory. Finally, in this paper a comparison of cumulative sum of hydrography from Resistance Measuring-flow Flume with cumulative water-volume-method is given, and satisfactory results have been obtained.

本文就电阻法测流的电压-流量非线性关系进行了探讨,提出了线性处理的方法,并设计了具有良好线性关系的测流槽。加上电测线路的高稳定性与测流系统较优的讯噪比,使得实验室降雨迳流模拟实验的分析研究十分方便。另外,还解决了由于水质不纯而导致的电极极化效应。最后,文章给出电阻法测流与体积法的精度对比结果。

The residual static correction plays a very important role in seismic data processing. Toobtain reasonable results,it is necessary to trace the correct reflection zones and to pick ac-curate time shifts between traces. A commonly used method is the correlation method.If the signal-to-noise ratio is relatively low, it is often necessary to choose one more reasonable re-sult from two completely different ones.A wrong choice may seriously distort the seismicprofile. This is the so-called multiple value...

The residual static correction plays a very important role in seismic data processing. Toobtain reasonable results,it is necessary to trace the correct reflection zones and to pick ac-curate time shifts between traces. A commonly used method is the correlation method.If the signal-to-noise ratio is relatively low, it is often necessary to choose one more reasonable re-sult from two completely different ones.A wrong choice may seriously distort the seismicprofile. This is the so-called multiple value problem. Wavelet Packet is a new method of sig-nal processing, It can split a signal into many pieces,with different infomation carried bydifferent pieces. The pure signal may be stored in some special pieces,If this is true,a puresignal can be extracted just by picking out these special pieces. A preprocessing method forseismic data is developed based on the said ideas. Numerical experiments show that the mul-tiple value problem is well solved.

强反射层追踪与相对时差拾取中的“多值”现象严重影响剩余静校正的效果,为此提出的小波包预处理方法,可以实现地震道噪声与信号及不同强反射层的分离,从而能自动识别并提取“纯”的强反射层,提高强反射层追踪的可靠性和相对时差的拾取精度.

Both the signal/noise ratto improvement of stacked 3-D seismic data and the trace interpolation of cross line have not been nicely achieved yet in present practice. Some data processing centers process in-line and cross-line seismic data respectively in different steps by 2-D polynomial fitting module for signal/noise ratio improvement. With polynomial fitting theory, we simultaneously finish both signal/noise ratio improvement and cross-line trace interpolation of stacked 3-D seismic data(here trace...

Both the signal/noise ratto improvement of stacked 3-D seismic data and the trace interpolation of cross line have not been nicely achieved yet in present practice. Some data processing centers process in-line and cross-line seismic data respectively in different steps by 2-D polynomial fitting module for signal/noise ratio improvement. With polynomial fitting theory, we simultaneously finish both signal/noise ratio improvement and cross-line trace interpolation of stacked 3-D seismic data(here trace interpolation is necessary because its group interval is two times that of in-line. ). Single-step processing can bring CDP seismic data for 3-D migration.This method makes full use of 3-D seismic informations,thus improving data processing efficiency.

三维地震资料叠后提高信噪比和横测线方向道内插问题,目前在生产中还没有得到很好的解决。现在有些数据中心是用二维多项式拟合提高信噪比模块对纵测线和横测线分两步进行处理的。本文应用多项式拟合理论直接在三维叠后地震资料上完成提高信噪比和横测线方向的道内插(通常横测线方向的道间距要比纵测线方向的道间距大一倍,需要进行道内插),用一步处理即可得到能应用于三维偏移的共深度点数据集。此法充分利用了三维地震资料的信息,提高了处理效率。

 
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