查询词典 beam splitter

To beam-column structure, a formula can calculate distortional buckling load .

在实际中荷载小偏心在所难免，在荷载小偏心的影响下构件还会发生畸变屈曲。

This study validate that it also can be used for distortional buckling beam-column under the condition of distortional buckling load calculated by the above formula.

本文用直接强度法来计算压弯构件在发生畸变屈曲时的承载能力，把计算结果同有限元模拟结果进行对比，验证在压弯构件畸变屈曲时直接强度法的适用性。

The detection method of long-distance object was proposed by minimum variance distortionless response beam forming,based on sub-band decomposition,to detect spatial energy distribution accurately.

本文采用基于子带分解的宽带最小方差无畸变响应波束形成进行空间能量检测，通过在频域各子带进行自相关矩阵平滑有效改善检测稳定性。

Firstly, four beams are formed using wideband distortionless beamforming method, which divides the whole space into four separated regions. Then the beam outputs are calculated and taken as the signal received by a reference point.

该方法首先预形成指向4个方向的宽带无失真波束，各自的主瓣区域把整个空间分为4个不同的测量区，然后分别将这4个波束形成器的波束输出作为参考点接收到的声信号，利用基于时延的定向方法定向处于不同测量区的声源。

A semi-blind MVDR (minimum variance distortionless response) beams forming method belongs to the array signal processing field of a beam former receiving wireless signals.

半盲的最小方差无失真响应波束形成方法属接收无线传播信号的波束器阵列信号处理范畴。

Position parameters were obtained from the simulation with the model of towed array.Based on the theory of radiated noise forming, the launch noise was simulated according to test condition in Laboratory,and the result showed the launch impulsion noise obeyed SαS distribution. The simulated noise attenuating in deep sea was analyzed with a sound loss translation model.Minimum variance distortionless response,spatially smoothed MVDR, and beam-space multiple signal classification algorithm were adopted to process the signal, hence the source level, the frequency structure and the location of the launch noise were achieved.

基于试验的实际情况，根据潜艇拖曳阵模型，仿真生成了各水听器阵元与本艇的位置关系；根据噪声源理论模型分析产生雷弹发射模拟噪声，利用SαS分布模拟武器发射冲击噪声，仿真分析模拟噪声在海洋环境中的传播衰减，对阵元信号分别利用最小方差无畸变响应法（MVDR 、空间平滑MVDR以及适应子带的波束域多重信号分类算法进行信号处理，得到发射噪声的声源级、频谱结构和方位。

The beamforming is an important measure of the orientation estimation in theunderwater sound positioning. The Generalized Correlation Beamformer isstudied and the algorithms of FIM and WFIM(WeightedFourier Integral Method) are given. In most circumstances, the performance of these two algorithms is better than Delay-Sum Beamformer. The MVDR(MinimumVariance Distortionless Response) adaptive beamformers are investigated in element andbeam domain. The research results show that the beam-domain MVDR algorithm notonly increases the resolution, but also saves computer when using it to aim orientationestimation.

4水下声定位中波束形成技术是方位估计的重要手段，重点研究了广义相关波束形成算法傅氏积分方法(FIM和加权傅氏积分方法，大多情况下FIM、WFIM算法的性能优于时延—求和波束形成；研究了阵元域和波束域MVDR自适应波束形成，结果表明，利用波束域MVDR进行目标方位估计，既可以获得高精度的方位估计，又可以大大减少计算量。

The second moment of the beam distribution function is discussed in detail.

详细地讨论了束流分布函数的二次矩。

For PPM, the magnetic field distribution and the ripple rule of electron beam in periodic focusing magnetic field is studied.

分析了阴极电子初始热速度对电子注成形和电子注质量的影响以及栅控电子枪的设计问题。

And the space distribution characteristics of the output beam were analyzed and investigated.

根据展开结果，对TEA CO2激光器输出光束的空间分布特性进行了分析与讨论。

He paid $5,000 for this cupcake.

他我这个纸杯蛋糕花了5000美元。

I mean, if you want to, that is

我的意思是，如果你们想吃的话。