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noise ratio
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  “noise ratio”译为未确定词的双语例句
    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
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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
    Inverse Q filter be for stack is based on the attenuation model of Futterman. By correcting phase distortion of wavelet,compensating frequency and amplitude of seismic wave,the resolution of seismic data the signal to noise ratio are improved,and the events are more continuous.
    叠前反Q滤波是以FUTTERMAN衰减模型为理论基础,校正地震子波相位拉伸,补偿地震波频率和振幅的损失,达到提高地震资料分辨率和信噪比及改善同相轴连续性的目的。
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    None of the methods can offer reliable Q value in the case of low seismic signal/noise ratio.
    当记录信噪比较低时,没有任何一种现行方法能求出可靠的Q值。
短句来源
    In trial modeling computation,theneural network recommended here can be used to estimate correct thin-bed thickness when the signal/noise ratio of seismic data is high enough.
    对模型进行试算,当地震资料的信噪比较高时,用文中的神经网络可正确地计算出薄层的厚度;
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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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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。

Plane wave decomposition of point-source seismic data can be achieved by per-forming τ-p transform in cylindrical coordinate system. Cylindrical-coordinate τ-ptransform of theoretical spherical wave field is done to check the correctness of true amplitude recovery using this transform. The real data processing result obtained by this method shows that amplitude information in τ-p domain is of high reliability and has the improved signal/noise ratio. Relation between amplitude and ray param-eter in τ-p...

Plane wave decomposition of point-source seismic data can be achieved by per-forming τ-p transform in cylindrical coordinate system. Cylindrical-coordinate τ-ptransform of theoretical spherical wave field is done to check the correctness of true amplitude recovery using this transform. The real data processing result obtained by this method shows that amplitude information in τ-p domain is of high reliability and has the improved signal/noise ratio. Relation between amplitude and ray param-eter in τ-p domain is analysed,bringing satisfactory result.

利用技坐标τ-p变换可以实现点源地震记录的平面波分解。本文对合成理论球面波波场进行了柱坐标τ-p变换,验证了该变换对真振幅恢复的准确性。该方法对实际资料进行处理的结果表明:τ-p域的振幅信息可信度较高,信噪比得到了改善。在此基础上,还进行了τ-p域内的振幅一射线参数关系分析,取得了令人满章的效果。

High signal/noise ratio, high resolution and high fidelity are the objectives seismologists have been seeking for. High signal/noise ratio is achieved by doing both the coherent separation of signals from noises and the iteration computation, high resolution by deconvolution iteration computation, and high fidelity by small parameter iteration and statistical inverse wavelets.The seismic data from different areas in Bohai Sea were processed by employing the comprehensive techniques. As a result,...

High signal/noise ratio, high resolution and high fidelity are the objectives seismologists have been seeking for. High signal/noise ratio is achieved by doing both the coherent separation of signals from noises and the iteration computation, high resolution by deconvolution iteration computation, and high fidelity by small parameter iteration and statistical inverse wavelets.The seismic data from different areas in Bohai Sea were processed by employing the comprehensive techniques. As a result, thin beds. minor faults, small sand bodies and the flat spots of oil, gas and water are distinctly displayed in seismic sections. It is particularly interesting that there are flat spot reflections in processed seismic section which indicate fluid boundary.

高信噪比、高分辨率和高保真度简称“三高”,一直是地震数据所追求的目标。本文所论述的“三高”技术中,高信噪比是通过信噪相干分离法及其迭代计算实现的;高分辨率是通过反褶积迭代运算达到的;高保真是通过小参数迭代和统计反子波完成的。统一应用这项综合技术对渤海湾不同区域进行了地震资料处理。其结果表明,“三小一点”(即小层、小砂体、小断层和油气水平点)地震地质现象相当明显。最令人感兴趣的是,处理后的地震剖面上出现了流体分界面的平点反射波。

 
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