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wave impedance     
相关语句
  波阻抗
     Characteristic Wave Impedance of Mo-Ti Composites
     Mo-Ti系复合材料的特性波阻抗
短句来源
     STUDY ON THE REFLECTION PROPERTY OF λ_0/4 FILM SYSTEM BY WAVE IMPEDANCE METHOD
     用波阻抗法对λ_0/4膜系反射性能的研究
短句来源
     Quasi-isentropic Compressive Characteristics of W-Mo-Ti-Mg System Flier-plate with Graded Wave Impedance
     W-Mo-Ti-Mg系波阻抗梯度飞片材料的准等熵压缩特性
短句来源
     Inverse Problem for the Viscoelastic Medium with Discontinuous Wave Impedance
     具有波阻抗不连续特性的粘弹性介质中的逆散射问题
短句来源
     Four low wave impedance intervals are identified which correspond to the following 4 reservoir intervals: (1) 3150-3170m, log interpreted water-and oil-bearing interval in Peng xl2 well;
     这4个低波阻抗段分别对应的储层段为:(1)3150~3170m井段,为蓬xl2井测井解释的含水、油层段;
短句来源
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  波阻抗的
     Elastic wave impedance technique is a method combining ordinary acoustic wave impedance inversion with AVO inversion,which can use seismic angular stack data in far offset for inversion of wave impedance.
     弹性波阻抗 (EI)技术是一种结合了常规声波阻抗 (AI)反演和 AVO反演技术的方法 ,可以利用远炮检距地震角度叠加数据进行波阻抗的反演工作。
短句来源
     APPROACHES TO INCORRECT FILTERING PREDICTION AND TIME-DOMAIN MINIMUM ENTROPY CONVERTED WAVE IMPEDANCE AND THEIR APPLICATION
     预测误差滤波及时域最小熵转换波阻抗的方法及其应用
短句来源
     Wave impedance inversion using 1-D wave equation and the effect
     一维波动方程反演波阻抗的实现及效果
短句来源
     The new expression can be used to construct pure SS wave zero-offset section directly from P-SV converted waves, and also can used to carry out SS wave impedance inversion and multiwave AVO analysis. Furthermore, information of amplitude versus with incident angle of P-SV waves can be extracted from SS wave data.
     因此,利用该关系式可以由P-SV波直接构建SS波零偏移距剖面,而且可以实现SS波阻抗的定量反演和多波AVO分析,还可以通过SS波资料提取P-SV波振幅随入射角变化的信息。
短句来源
     The authors give the relationships between hydrate-bearing sediments,free gas-bearing sediment porosity,seismic wave velocity and wave impedance,and also set forth inversion technique method of interlayer porosity.
     给出了含天然气水合物沉积层、含游离气沉积层孔隙度与地震波速度及波阻抗的关系,提出了确定性沿层孔隙度反演技术的方法。
短句来源
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  地震波阻抗
     Seismic wave impedance inversion using improved hereditary algorithm
     用改进的遗传算法进行地震波阻抗反演研究
短句来源
     Improved Genetic Algorithm for Wave Impedance Inversion
     用改进的遗传算法进行地震波阻抗反演
短句来源
     Wave impedance inversion via annealing and genetic algorithm.
     用退火遗传算法进行地震波阻抗反演
短句来源
     The precision of seismic wave impedance inversion can be improved by applying the new genetic algorithm.
     使用改进的遗传算法对地震波阻抗进行反演 ,可很好地提高反演的精度。
短句来源
     HYBRID GENETIC ALGORITHM AND ITS APPLICATION IN SEISMIC WAVE IMPEDANCE IN
     综合遗传算法及其在地震波阻抗反演中的应用
短句来源
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  波波阻抗
     Multitrace wave impedance inversion using wavelet transform
     多道小波波阻抗反演
短句来源
     IMPROVEMENT OF WAVE IMPEDANCE INVERSION TECHNIQUE OF SMALL WAVE AND ITS APPLICATION IN RESERVOIR DESCRIPTION
     小波波阻抗反演技术的改进及应用
短句来源
     Wave Impedance Inversion by Wavelet Transform
     小波波阻抗反演
短句来源
     According to the characteristic of special thin distribution and much horizontal change of the consistent reservoirs in the central part of Songliao Basin, this paper reforms the application problems of wave impedance inversion technique of small wave in order to increase the horizontal prediction accuracy in complicated geologic condition and increase the success percent of exploration wells.
     针对松辽盆地中部组合油层在空间上分布薄且横向变化快的特点 ,以提高复杂地质条件下的储层横向预测精度、提高探井成功率为目的 ,对小波波阻抗反演技术在应用中存在的问题进行了改进 :一是针对大倾角地震资料信噪比低的问题采用了倾角扫描技术 ; 二是针对波阻抗剖面中常出现锯齿状波形而引入中值滤波技术。
短句来源
     on that basis, the template of predicting deep lithology and gas bearing bed in Yingge Sea Basin and Basin of southeast of Hainan Island has been made according to Poisson ration and combining the wave impedance of P wave and S wave seismic data to predict lithology and gas reservoir for LD8 3 structure.
     在此基础上 ,根据泊松比并结合纵横波波阻抗 ,制作了莺歌海盆地和琼东南盆地中、深层的岩性和气层预测量板。 应用这一预测量板和多波地震资料对 L D8- 3构造进行了岩性和气藏预测。
短句来源
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      wave impedance
    It is proposed that the wave impedance of the field be measured to eliminate the effect of the source's spectrum.
          
    It is shown that the systematic error of MPMTs is due mainly to nonuniformity of the wave impedance of the delay line of the MPMT, which is randomly distributed over the length of the line.
          
    A vital contribution is the work being done to formulate state standards of wave impedance, phase shifts, and attenuation.
          
    This is attributed to the wave impedance matching led by ITO thin film combined with a λ/4 thickness of high-permittivity dielectric spacer.
          
    The dependences of a complex wave impedance, a wavelength, and an attenuation constant of a MSL were analyzed on the frequency f until f = 70 GHz.
          
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    From the angle of bionics of animal sonar system, this paper discusses the function of acoustie lens of the melon of Lipotes Vexillifer. Based upon the theory of the dome of underwater transducer we make the following suggestions: (1) the density (ρ) and the acoustic wave impedance of the melon can be changed so as to get the maximal transmission of energy for the emission of different kinds of signals. (2) the shape and the curvature of the. melon can be changed so as to get the necessary pattern of emitted...

    From the angle of bionics of animal sonar system, this paper discusses the function of acoustie lens of the melon of Lipotes Vexillifer. Based upon the theory of the dome of underwater transducer we make the following suggestions: (1) the density (ρ) and the acoustic wave impedance of the melon can be changed so as to get the maximal transmission of energy for the emission of different kinds of signals. (2) the shape and the curvature of the. melon can be changed so as to get the necessary pattern of emitted beam in dolphins' locating, communicating and hunting activities. The sceond part of the paper describes the preliminary results of a measurement of the acoustic characteristics of a piece of the melon of Lipotes Vexillifer.

    本文包括两部分。第一部分是从生物声纳仿生学角度,讨论了白暨豚声发射中,关于额隆的透声作用并从设计水声换能器导流罩全透射基本理论出发,提出两点设想: (1) 额隆的密度(ρ)可变,即波阻抗(Z=ρC)可变,以适应在发射不同类型信号时,都得到能量的最大传输。 (2) 额隆的形状可变,即曲率可变,以适应在定位、通讯,觅食中所需的发射方向特性。第二部分是对1980年2月1日至2月4日在我院消声水池(4×5×8M~3)中,对白暨豚额隆进行声学测量作出的初步服告。

    On the basis of in situ experimental investigation,the relationship between cavity ratio and blast stress wave parameters is established.The attenuation of stress wave along the axis of the strip charge is indicated.The effect of geological conditions on the attenuating index and the interrelation between the wave impedance and the attenuating index are given.

    根据现场实验研究结果,推出了空腔比和爆炸应力波参量之间的关系。给出了应力波沿药包轴方向的衰减情况以及地质条件对衰减指数的影响、波阻抗和衰减指数间的依赖关系。

    Starting with the postulation of impedance discontinuity, a complex impedance theory for the interelectrode multireflection effects of surface acoustic wave is presented. In this theory an electrode under the multireflection may be equivalent to a transmission line with a complex wave impedance and a complex propagation phase constant. As a result, the interelectrode multireflection effects could be expressed by simple formula. Thus, not only the frequency response of the equidistance transducers and the...

    Starting with the postulation of impedance discontinuity, a complex impedance theory for the interelectrode multireflection effects of surface acoustic wave is presented. In this theory an electrode under the multireflection may be equivalent to a transmission line with a complex wave impedance and a complex propagation phase constant. As a result, the interelectrode multireflection effects could be expressed by simple formula. Thus, not only the frequency response of the equidistance transducers and the reflection coefficients of uniform gratings, but also the reflection coefficients of withdrawed gratings and the frequency responses of the dispersive transducers can be described by these analytical expressions inplace of the commonly used numerical computation of matrix series multiplication which can not tell the relations between the results and the parameters, and is time-consuming in computation.

    对于声表面波的指间多次反射效应,从阻抗不连续的假设出发,提出了复阻抗理论,把指条等效为具有复数阻抗和复数传输相位的传输线,从而反映出指间多次反射效应。引入这样两个复变参量之后,指间多次反射效应就可以用很简明的解析式表达出来。这样,不仅对于等间距换能器的频响和均匀栅格的反射系数,而且对于抽指栅格的反射系数和色散换能器的频响,都可以用解析表达式来表述。与通常使用的矩阵连乘的数值计算方法相比,既可以讨论结果与参量之间的关系,又可以节省数值计算的时间。

     
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