波散

但由于此两种方法的波散现象，存在绕射波收敛不完全等问题。

Merely the wave dispersion , the convergency of diffracted wave is , in most cases , incomplete .

本文讨论高阶偏微分方程与波散的关系，给出了三阶、四阶和五阶偏微分方程的波数曲线，提出了55度偏移的差分方程及其在计算机上的算法。

This paper deals with the relationship between the higher partial differential equation and the wave dispersion . The wave-number curves of cubic , quartic and quintic partial differential equation , the differencing equation and its algorithm for 55 ° migration have been derived .

制作包括吸收和波散效应的VSP合成记录

On making the synthetic VSP record including absorption and frequency dispersion

假设杂波散斑分量和幅度调制分量均服从广义Gamma分布是广义K分布杂波模型的前提条件。

As a precondition for generalized K-distributed clutter model , the speckle component and the amplitude modulated component should obey the generalized Gamma distribution .

高分辨力雷达体制下，杂波散斑分量与调制分量更适合用广义Gamma分布模型描述，在此基础上本文推导了广义复合模型表达式；

Under high resolution radar , it is more suitable for the generalized gamma probability density function ( G Γ - pdf ) that characterizes the speckle component and modulation component in the clutter . The expression of generalized compound ( GC ) pdf is derived based on this .

进而又得到了，在使用具有一定尺寸孔径的横波探头时，所接收的SV波散斑的归一化声强的概率密度函数表达式，它与横波探头内接收到的平均散斑个数有关。

Besides , the probability density function of the normalized intensity of the SV wave speckles received by a transverse wave probe with an aperture of some size was deduced . The probability density function was related to the average number of the speckles received by the probe .

计算了波散引起的偏移误差。

The migration error caused by the dispersion is calculated .

波散波的反演

The inversion of dispersive wave

为提取这些信息，本文提出一种波散波的反演方法，包括波散波记录的正演模拟、求取波散曲线和迭代求解过程。

The inver - sion method for dispersive wave is advanced here to get these infor - mations , it includes the forward modeling of dispersive record , ob - taining the dispersive curve and iteration operation .

对覆盖一层均匀各向同性材料的功能梯度半空间中的Love波频散问题进行了研究，给出了Love波频散方程的一般形式。

The dispersion problem of Love waves is investigated in the functionally graded half-space covered with an isotropic homogeneous layer .

本文利用曲线坐标的方法研究局部隆起或凹陷地形中的Love波频散问题。

The problem on dispersion of Love wave in ridge or canyon topography is studied by means of curve coordinate system .

有不同附加层时Rayleigh波频散方程用广义Rayleigh波测量压电薄膜结构的初应力

Generalized Rayleigh Wave for Measuring Initial Stress in Layered Piezoelectric Structure

磁场对电磁弹性板中Lamb波频散特性的影响

Effect of Magnetic Field on Phase Velocity of Lamb Wave in Magneto-Electro-Elastic Plate

基于Lamb波频散特性的声发射源平面定位新方法

New Methods of Planar Location of Acoustic Emission Source Based on the Dispersive Characteristics of Lamb Wave

F-K域三层对称模型洛夫型导波频散分析

F-K dispersion analysis of Love guided waves in three layered symmetry model

渐近分析与数值考察都表明，井径r1→∞时，柱面Love波频散方程趋向平面双层半空间的Love波方程，柱面Love波的截止频率趋于零。

The asymptotic expression of dispersion equation of cylindrical Love waves as well radius r 1 →∞ consistently tends to the dispersion equation in the horizontal half space case , and cut off frequency tends to zero .

一种改进的Wiggins地震面波频散正演方法

An improved Wiggins method for deducting surface wave dispersion

先应用层板理论对单向板和对称铺层的复合材料层合板的弹性特征进行建模，根据不同弹性特征给出最低阶对称模式和最低阶反对称模式的Lamb波频散控制方程。

According to the different elastic characters , we built the propagating model of lamb wave in unidirectional and symmetric cross-ply laminates and given the lamb wave dispersion equations of lowest symmetric and the lowest antisymmetric modes .

大量的数值模拟表明，SVD和LSQRD在面波频散网格反演两步法中的应用效果都很好。

A lot of numerical simulations indicate that both SVD and LSQRD are very effectively applied to inversion of surface wave dispersion .

本文分析得到的厦门两场地的瑞利波频散曲线与Yamanaka博士的结果进行对比，验证了本文程序的可靠性，对存在差异的原因进行了分析。

Rayleigh wave dispersive curves of the two sites in XiMen city were estimated in this paper , and the result were compared with Doctor Yamanaka . Result proved that the program is reliable , and the reasons why those curves were difference were analysed . Second , array configuration .

实测面波频散曲线计算方法研究与应用实例

Calculation Method for Dispersion Curve of Surface Wave and Its Application

管内流体对单壁碳纳米管中弯曲波频散的影响

Flexural Wave Dispersion in Single walled Carbon Nanotube Filled with Fluids

利用多道信号测定短周期面波频散

Determine short - period dispersion of surface wave from multichannel signals

计算瑞利波频散曲线的快速矢量传递算法

Fast Vector-transfer Algorithm for Computation of Rayleigh Wave Dispersion Curves

面波频散反演地球内部构造的遗传算法

Genetic algorithms inversion of lithospheric structure from surface wave dispersion

用频率-波数法分析瑞利波频散曲线

Investigation on the dispersion curves of Rayleigh wave by frequency-wavenumber analysis method

半空间垂向非均匀复杂介质面波频散方程

Frequency divergent equation of surface wave for half-space vertical inhomogeneous complex media

层状介质中多模式面波频散曲线研究

Study on Multi-modes Surface Wave Dispersion Curves in Bedding Media

软弱夹层速度对瑞利面波频散曲线的影响

Impact of sandwich speed on the dispersion curve of the Rayleigh wave

中国及邻区的地震面波频散反演

Surface wave dispersion inversion in China and adjacent regions