This method can separate order wave in time domain without phase bias.
该方法能够从时域中直接分离各阶比，且不产生相位偏移。
The wavelet transform is of good localization property in the domain of time and frequency, which provides a comprehensive application in processing acoustic wave.
小波变换同时有在时间域和频率域对信号进行局部化的特点，使其在声波信号处理中有着广泛的应用前景。
A two-dimensional time domain met hod is presented for the analysis of dynamic behaviour of the ocean cable system in wind, wave and current.
本文介绍由表面浮标、缆和中间物体组成的综合海洋缆系统动力学特性的二维时域分析方法。
A full wave analysis of lossy interconnection lines on doped semiconductor substrates in high speed integrated circuits is carried out by means of a finite difference time domain (FDTD) approach.
本文首次利用时域有限差分(FDTD)法分析了高速集成电路芯片内半导体基片上的有耗互连传输线的电特性。
The results may better reflect the non-stationarity of ground motion in time domain and are closer to reality than those by wave theory and stationary random vibration theory.
由于这种方法能较好地反映地面运动的时域非平稳性，所以得到的计算结果更真实。
In addition, with the appearance of large-capacity and high-speed computer, it is feasible that time domain theory is applied for numerical simulation of ship motions and wave loads.
另外，随着大容量和高速度计算机的出现，对于时域耐波性理论研究有了数值计算实现的条件。
A proposed "D. Z. Z. formula" for computing wave exciting forces is presented, therefore the exciting forces in time-domain can be given without computing the diffraction potential.
作者给出了计算波浪扰动力的公式，使得在时域中有航速船舶波浪扰动力的计算，可以用辐射势和入射波势来表示，而不须求解绕射势。
A time domain boundary element model (BEM) is presented for wave propagation problems in layered media.
建立了研究层状介质波动问题的时域边界元计算模型。
By using one-dimension FDTD method we simulates the decay of double exponential pulse through the soil media, and its refractive time-domain wave shape is discussed in detail.
用一维FDTD方法模拟了双指数脉冲在单层岩土介质中的衰减，并对电磁波在岩土层中的穿透进行了详细的讨论。
It is difficult to detect the periodic impulse component in the vibration acceleration signal with conventional analysis methods such as time domain wave and frequency spectrum.
通过时域波形和频谱等基本分析手段来探测振动加速度信号中的周期性冲击分量往往是困难的。
In the dramatic mountain terrain, seismic wave can't be received easily; DC and time domain sounding are limited by the above reason.
在地形起伏剧烈的山区，地震波信号接受、直流及时间域电测深深度等因素限制了以上测深方法的发挥。
By using the plane wave expansion and finite-different time-domain (FDTD) methods, we can find a larger absolute band gap in the low and high frequency.
通过运用平面波展开方法以及有限差分时域(FDTD)方法进行分析，可以明显地发现，在低频和高频区域增大了光子晶体的光子禁带。
The three-dimensional second order wave diffraction and radiation in time domain are also studied in detail in the forth and fifth chapter.
第四章和第五章分别对浮体的三维绕射和辐射问题进行了较详细的研究。
This paper is concerned with the transient responses of semisphere containment structure of nuclear reactor to a blast wave by the boundary element method in time domain.
本文用时域边界积分方程提出研究半球形核反应堆安全壳在爆炸冲击波作用下动力响应分析的计算模型。
According to the filed data, the mode of stress wave to be picked up is selected and the characteristic changes of stress wave signals in time and frequency domain are analyzed.
根据现场测试的数据，选择应力波检测模式，并分析了应力波信号随检测距离的时频特性变化。
The analytical expression of linear solution in time domain is derived for two-dimensional regular wave generated by rocker flap wavemaker.
本文给出摇板式造波机所造二维规则波时域线性解的解析表达式，它描述一个带有波前的二维线性波的传播过程。
The physical mechanism and the evolution of quantum wave function in time-domain are studied.
分析了波函数的演化规律和系统极化强度的关系。
A 1d finite element method in time domain is developed, which is used to calculate the in-plane wave motion of free field in elastic layered semispace by oblique seismic incidence.
提出了一种弹性水平成层半空间中平面内波动斜入射时自由波场时域计算的一维化有限元方法。
Locally explicit time-domain radiation boundary condition for 2-d and 3-d transient analyses of wave propagation in unbounded media were developed for the cylindrical and spherical wave equations.
基于柱面波和球面波动方程，推导建立了适用于无限介质中二维和三维瞬态波动分析的显式时域辐射边界条件公式。
A 1d finite element method in time domain is developed, where the wave motion of free field in elastic half-space by SH wave oblique incidence is simulated.
提出了一种计算出平面SH波斜入射时弹性半空间自由波场时域计算的一维化有限元方法。
The two-dimensional fast Fourier transform (2D-FFT) method has been used to analyze the ultrasonic signals where different wave modes overlaid in the time domain.
利用二维快速傅立叶变换的时频分析方法，对有限元计算得到的时域信号进行了分离，得到了各个模式超声波的相速度色散曲线。
The two-dimensional fast Fourier transform (2D-FFT) method has been used to analyze the ultrasonic signals where different wave modes overlaid in the time domain.
利用二维快速傅立叶变换的时频分析方法，对有限元计算得到的时域信号进行了分离，得到了各个模式超声波的相速度色散曲线。
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