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偏振系数
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  polarization coefficient
    Thus in common receiving gathers,firstly calculate the polarization coefficient of direct wave for each trace,and then use the resulted coefficients as weights to determine the main polarization direction in detector coordinates via weighted least square method,and finally,orientations of geophones are esti- mated.
    因而,可以在共检波点道集中,首先计算各道直达波的偏振系数,再用偏振系数作为权系数,采用加权最小二乘算法直接计算出检波器坐标中的主偏振方向,以此准确估算出检波器方位。
短句来源
  polarization coefficient
    Thus in common receiving gathers,firstly calculate the polarization coefficient of direct wave for each trace,and then use the resulted coefficients as weights to determine the main polarization direction in detector coordinates via weighted least square method,and finally,orientations of geophones are esti- mated.
    因而,可以在共检波点道集中,首先计算各道直达波的偏振系数,再用偏振系数作为权系数,采用加权最小二乘算法直接计算出检波器坐标中的主偏振方向,以此准确估算出检波器方位。
短句来源
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  polarization coefficient
Analytical calculation of a fourth-order vacuum polarization coefficient
      
A quadratic polarization coefficient of the gapK12?0.2 meV/(μC2 cm-4), independent of temperature, has been found.
      
Velocity and polarization coefficient are used to describe the activity and orientation of animals.
      
The polarization coefficient may change with an intrinsic rhythm: during the morning, the phototropic reaction is generally more positive than during the afternoon.
      
G test and variance analysis show that light intensity and wavelength can affect the orientation and the velocity of male individuals, but do not significantly affect the polarization coefficient of female individuals.
      
更多          
  polarization coefficient
Analytical calculation of a fourth-order vacuum polarization coefficient
      
A quadratic polarization coefficient of the gapK12?0.2 meV/(μC2 cm-4), independent of temperature, has been found.
      
Velocity and polarization coefficient are used to describe the activity and orientation of animals.
      
The polarization coefficient may change with an intrinsic rhythm: during the morning, the phototropic reaction is generally more positive than during the afternoon.
      
G test and variance analysis show that light intensity and wavelength can affect the orientation and the velocity of male individuals, but do not significantly affect the polarization coefficient of female individuals.
      
更多          


There are various waves in a seismic record. The vibrating traces of their particles aredifferent in character. Polarization analysis technique can charactcrize the vibrating tracesquantitatively. Therefore,it is feasible for us to implement polarization filtering, such as surfacewave suppressing, P-wave and converted wave separating, by use of different polarizationcharacters (polarization coeffcient,polarization direction,transfer function ctc. ). In this paper, wedescribe our work where polarization analyzing....

There are various waves in a seismic record. The vibrating traces of their particles aredifferent in character. Polarization analysis technique can charactcrize the vibrating tracesquantitatively. Therefore,it is feasible for us to implement polarization filtering, such as surfacewave suppressing, P-wave and converted wave separating, by use of different polarizationcharacters (polarization coeffcient,polarization direction,transfer function ctc. ). In this paper, wedescribe our work where polarization analyzing. surface wave suppressing, and P-wave andconverted wave separating are finished on the three component data both from model laboratoryand field survey. The results obtained ate satisfying.

地震记录中存在多种类型的波,它们的质点振动轨道表现出不同的特征。偏振分析技术能够定量地表征质点振动轨迹,因此,利用质点偏振不同的特征(偏振系数,偏振方向,传递函数等)进行压制面波、分离纵波和转换波的偏振滤波处理是可行的。本文对模型实验室三分量数据和实际地震三分量记录进行偏振分析研究,并做压制面波、分离纵波和转换波的处理,取得了较好的效果。

The vector fidelity analysis had been investigated with multi-component data obtained during a recent multi-component test at Zhongyuan oil field of China using VectorSeis sensors. Data analysis methodology, such as polarization and cross-correlation error was calculated and results were compared with those obtained from traditional three-component geophone data. Although the polarization coefficients of the director wave appeared linear polarization on both three-component geophones' seismic data, the resolution...

The vector fidelity analysis had been investigated with multi-component data obtained during a recent multi-component test at Zhongyuan oil field of China using VectorSeis sensors. Data analysis methodology, such as polarization and cross-correlation error was calculated and results were compared with those obtained from traditional three-component geophone data. Although the polarization coefficients of the director wave appeared linear polarization on both three-component geophones' seismic data, the resolution and the anti-noise of the polarization coefficient of digital sensors data were better than that of analogous geophones data. The correlation error coefficients of digital sensors data were also lower than that of analogous geophones data. The results showed that vector fidelity response of VectorSeis sensors was demonstrably improved when comparing to the response of traditional three component geophones. This implies better imaging of both P-P and P-S data.

介绍了矢量保真度分析技术的基本原理。利用VectorSeis数字和普通模拟三分量检波器采集的多分量资料计算了地震波质点偏振的椭圆率和平均互相关误差,并将两类检波器的计算结果进行了对比。对比结果表明,虽然用两类检波器采集的资料计算出直达波的质点振动轨迹都呈线性偏振,但数字检波器线性偏振系数的分辨能力和抗干扰性比普通检波器好,在互相关误差系数上表现得要比模拟检波器小得多,表明数字检波器采集的地震数据矢量保真度优于模拟检波器。在中原油田进行了二维三分量地震勘探试验,得到了较好的PP波和PS波成像资料。

The orientation of crosswell 3-D component geophone is critical to processing of crosswell seismic data.Crosswell seis- mic observations are usually based on sectors.First arrivals in common receiving gather should have the same axis of polariza- tion.Thus in common receiving gathers,firstly calculate the polarization coefficient of direct wave for each trace,and then use the resulted coefficients as weights to determine the main polarization direction in detector coordinates via weighted least square method,and...

The orientation of crosswell 3-D component geophone is critical to processing of crosswell seismic data.Crosswell seis- mic observations are usually based on sectors.First arrivals in common receiving gather should have the same axis of polariza- tion.Thus in common receiving gathers,firstly calculate the polarization coefficient of direct wave for each trace,and then use the resulted coefficients as weights to determine the main polarization direction in detector coordinates via weighted least square method,and finally,orientations of geophones are esti- mated.This method can yield reliable horizontal radial compo- nent and tangent component of crosswell wavefield.

井间三分量检波器的方位确定是井间资料处理的关键。井间地震观测通常采用分扇区的观测方式,其共检波点道集中的初至波应该具有相同的偏振轴。因而,可以在共检波点道集中,首先计算各道直达波的偏振系数,再用偏振系数作为权系数,采用加权最小二乘算法直接计算出检波器坐标中的主偏振方向,以此准确估算出检波器方位。这种处理方式能得到稳定可靠的井间波场水平径向分量和切线分量。

 
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