The water sound speed and temperature can be calculated by measuring Brillouin scattering frequency shift.
借助测量水体布里渊散射的频移，可得到水体声速或温度。
In this paper, the step frequency response equation of optical-region radar target is firstly established by using theories of multiple scattering centers and local resonance.
本文首先根据多散射中心理论与局部谐振原理，建立了雷达目标在光学区阶梯频率波形激励下的响应方程。
Based on the multi scattering center theory, the frequency model describing electromagnetic scattering characteristics of target is developed.
首先从目标多散射中心理论出发，推演了描述目标散射特性的频域散射数学模型。
In this thesis, Spectral method is used to analyse the scattering characteristic of Frequency Selective Surfaces (FSS).
本文用谱域方法研究了频率选择表面(FSS)的散射特性。
This paper focuses on the phonon frequency effect and the isotope-doped concentrates effect on the phonon scattering in isotope-doped Si.
本论文主要研究声子频率和掺杂点缺陷浓度对同位素掺杂硅声子散射的影响。
The method and results would be useful for analysing angular and frequency dependence of the bottom (or surface) scattering at low grazing angles.
本方法和结果将有助于分析小掠角海底(面)散射的角度、频率依赖关系。
The Parameters of a broadband lumped-element circulator are optimized by using the scattering matrix eigenvalue relative to the frequency.
本文从散射矩阵本征值的频率关系出发，对宽带集中元件环行器所需的设计参数作了优化计算。
In the millimeter band, the variations are found of the power density of the rain clutter induced by back scattering with frequency and rain rate.
在毫米波段计算了雨区的后向散射引起的雨杂波功率密度随频率及降雨率的变化。
The significance and possibility of the use of stimulated Brillouin scattering of a mixed liquid media in tuning laser frequency and generating tunable coherent ultrasonic radiation are discussed.
讨论了利用混合介质受激布里渊散射效应调谐激光频率和产生可调谐相干声辐射的可能性及意义。
This paper describes also the linear interpolation for the increase of the sampling frequency and the average method for the suppression of the scattering echoes.
还描述了用于提高采样频率的线形内插法和用于抑制分散回声的均值法。
The fraction frequency and double frequency scattering peaks exhibit similar scattering behaviour as the resonance scattering.
分频散射和倍频散射峰与共振散射峰具有相似的散射行为。
At the same time, frequency dependence of scattering attenuation and anisotropic velocity variation makes fracture size deduction from seismic data.
与此同时，各向异性介质中散射衰减及速度随频率的变化，也为通过地震数据分析预测裂隙大小尺度提供了可能性。
During the radiometric calibration of the low frequency UWB SAR system, the scattering model of the calibrators should be regarded as the low frequency resonance scattering.
低频超宽带合成孔径雷达辐射定标过程中，定标体的散射特性表现为低频谐振散射特性。
The present invention discloses method and apparatus of microwave signal frequency transformation based on optical fiber stimulated Brillouin scattering.
本发明公开了一种基于光纤受激布里渊散射的微波信号频率变换方法及装置。
The frequency domain result of Gaussian beam scattering from rough surface is extended to the time domain and the effect of the beam waist radius is also discussed.
将高斯波束粗糙面散射的频域结果推广到时域，获得了与平面波入射时相似的结果，并分析了束腰半径变化对计算结果的影响。
Raman spectrum is a kind of molecule scattering spectroscopy, which is characterized by the frequency excursion that caused by interactions of molecule and photon to show the information of molecule.
拉曼光谱是一种分子散射光谱，通过与分子相互作用的光子产生的表征分子振动或转动能级差的特征频移，来反映分子结构或成分的信息。
By introducing the Kronecker product into the frequency domain and employing the concept of scattering fading weight factor, an outdoor broadband MIMO scattering-distribution model is derived.
该方法把克罗内克积应用到频域，同时提出频域散射衰落加权因子的概念，由此导出一种室外宽带MIMO散射分布模型。
The result shows that the frequency shift of Brillouin scattering light is scarcely influenced by air pressure and vapor pressure, and greatly affected by air temperature.
结果表明。布里渊散射光频移受大气压、水汽压的影响很小。而受大气温度的影响很大。
The angular distribution of the bistatic scattering cross-section from fractal sea surface for different fractal dimension and different spatial frequency is analyzed.
分析了不同分维下分形海面双站散射截面的角分布情况。
They have specific absorption spectra and there are obvious resonance Rayleigh scattering (RRS), second-order scattering (SOS) and frequency-doubling scattering (FDS) spectra.
银纳米微粒具有特定的吸收光谱和明显的共振瑞利散射(RRS)、二级散射(SOS)和倍频散射(FDS)光谱。
The finite-difference frequency-domain method with multifrontal algorithm is presented for two-dimensional cylinder scattering problems.
引入多波前算法，提出了结合频域有限差分法分析二维柱体的电磁散射问题。
A method to solve the scattering acoustic field of complex target was proposed for the near-field scattering characteristics of an underwater target in high-frequency.
针对水下目标高频近场散射特性，提出了一种求解水下复杂目标散射声场的方法。
In high frequency region, the response of an extended target is well approximated as the sum of responses from individual scattering centers.
在高频区，复杂目标的电磁散射表现为多散射中心相干迭加的结果。
Different ways to generate yellow laser were discussed, especially two nonlinear-optical methods of sum-frequency mixing and stimulated Raman scattering (SRS).
对黄光激光的产生方式进行了讨论，重点介绍两种获得黄光激光的非线性光学方法：和频和受激拉曼散射效应。
A hybrid technique for calculating the scattering of two-dimensional large bodies with slots is developed by combining high-frequency approximation method with low-frequency numerical method.
本文利用高频近似方法与低频数值方法相结合的混合方法计算二维开槽电大目标的散射。
In this paper, I present three studies on high-frequency seismic attenuation and propose that the physical mechanism results from the interference of elastic microscopic multiple scattering waves.
通常认为地震波高频衰减的物理机制主要是滞弹性的吸收，本文通过如下三方面的研究认为地震波高频衰减的物理机制主要是弹性的微观多次散射波的相互干涉。
One or one more stimulated Brillouin scattering devices are connected between third end of first circulator and coupler for producing more high-frequency microwave signal.
在第一环行器的第三端与耦合器间还可接入一个或一个以上受激布里渊散射装置以产生更高频的微波信号。
The efficient numerical solution in the region of low frequency and resonance is presented for electromagnetic scattering on rectangular conductors and dielectric-coated plates.
本文根据二重性原理及矩形导体板边界条件的特点，提出了二维板表面电、磁流密度的全域基表达式，利用矩量法求解电磁场问题。
Several examples calculating the scattering displacement show that the method used for scattering high-frequency transient wave is effective.
数值结果表明利用该形函数计算高频情形下的散射问题具有很高的精度。
Target characteristics and high frequency scattering mechanism are summarized. RCS analysis methods, RCS reduction approaches and low RCS target detection techniques are discussed.
本文概述军用飞行目标对微波雷达的散射特性，讨论了目标的高频散射机理，雷达截面(RCS)分析方法及减缩途径，以及低rcs目标探测技术等。
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