简正波具有驻波性质，基本已反映在一阶近似解中。
Indoing SOS the standing wave nature of the solution is emphasized.
简正波耦合模式有双向全耦合模式、单向耦合模式、绝热近似模式。
Usually, mode coupling between normal modes is solved by two-way coupling mode, one-way coupling mode and adiabatic mode theories.
基于声简正波理论，给出了内波导致声场起伏特性的一般理论解释。
Based on Normal Mode theory, the explanation of sound field fluctuation characteristic caused by internal waves is given.
结合广义射线简正波转换、声场强度干涉结构研究了简正波耦合机理。
We study the mechanism of acoustic normal mode coupling from the aspects of ray-mode transformation and interference structures of acoustic waveguide in the ocean.
文中用其结果计算了具有粗糙界面的负声速梯度浅海中的简正波声场。
The sound field of normal modes in the. shallow-water having negative velocity gradient and rough interface are calculated using such results.
对于简正波，运用高效数值方法解频散方程，提高了简正波的计算精确和速度。
To obtain accurate normal modes quickly, the frequency dispersion equation was solved by an efficient numerical algorithm.
首先，用射线方法和简正波方法对空气中的声源在水下产生的声场进行了分析。
Firstly, the ray method and normal mode method are used to calculate the acoustic field in underwater with the source in the air.
应用简正波理论并结合波数积分法，建立了浅海低频声传播特性的仿真数学模型。
Using the Normal Model Theory and Wavenumber Integration Method, a low frequency acoustic wave propagation model in shallow sea of multi-layered media is constituted.
应用简正波传播时间与声速起伏的对应微扰关系式，给出了上述对应关系的理论解释。
The relation equations between Normal Mode propagation travel-time and sound-speed fluctuation are used to explain the qualitatively relationship between two spectra.
本文讨论比较一般的指向性辐射器在分层介质中的声场，并将指向性概念应用于简正波计算。
In this paper, the sound field of a more general directional radiator in a stratified medium is treated, and the concept of directivity is applied to calculation of the normal modes.
本文对比了波动理论、简正波声场和射线模型的声场预报结果，给出了后二种方法的近似程度。
Results of acoustic field prognosis on wave theory, normal model and ray model are compared, and the approximate degree of the later two models is given.
利用简正波干涉理论，对实验结果中声场水平纵向相关的振荡结构与强烈起伏现象进行了分析与解释。
The oscillation pattern and strong fluctuations of the horizontal-longitudinal correlations observed in the experiments are analyzed and interpreted by using the normal modes interference theory.
本文首先把能够到达接收器的那些简正波按能量相加，然后对发射深度与接收深度进行平均，导出了负声速梯度浅海中平均声强的表式。
The normal modes which can arrive at a receiver are summed according to energy, and an expression for the averaged intensity is then obtained by averaging over the source and receiver depth.
本文讨论了这类非互易旋光张量下的波矢面及简正模的基本形式。
This paper discussed the basic form of the wave-vector surface and normal mode of nonreciprocal gyrotropic dielectric tensor.
本文讨论了这类非互易旋光张量下的波矢面及简正模的基本形式。
This paper discussed the basic form of the wave-vector surface and normal mode of nonreciprocal gyrotropic dielectric tensor.
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