On the base of a plenty of facts we suggested a method in which bi-Gaussian form is approached the output pulse in multimode fibers The accuracy measuring band in time domain can be improved highly.
在综合大量实例的基础上，提出双高斯函数逼近多模光纤的光脉冲输出的解析近似方法，使时域法确定光纤带宽的精度大为提高。
Gaussian random white noise is one of the mostly used signal form and is widely used in digital signal processing and analysis.
高斯随机白噪声是一种常用的信号形式，在信号分析和信号处理中具有重要价值。
The Laguerre-Gaussian beams will form solitons or be reduced to Gaussian beams under certain conditions.
满足一定条件时，拉盖尔-高斯光束将形成光孤子或退化为高斯光束。
The Gaussian index profile of a diffused optical waveguide is approximated by an appropriate polynomial, and the asymptotic solutions of the mode efficient index is derived in a analytical form.
本文用适当的多项式函数近似扩散光波导的高斯折射率分布函数，推导了导模有效折射率的解析形式渐近解。
The coupling constants of the vertices are in good agreement with the experimental data and the form factors of the vertices are much like the Gaussian functions.
顶角的耦合常数与实验符合得很好，顶角的形状因子基本上是一个高斯型的分布。
First we introduce the abstract form of the EM algorithm. Then we develop the EM parameter estimation procedure for one application: finding the parameters of a mixture of Gaussian densities.
首先给出em算法的抽象形式，然后研究EM参数估计方法的一个应用：求高斯混合密度的参数。
The instantaneous energy density does not oscillate with time at the harmonic form, its amplitude forms and envelope with Gaussian shape.
能流密度不再随时间作简谐振荡，它的振幅构成一个高斯形状的包络。
The results indicate that with the increase of focal length, the intensity distribution on the focal plane varies from central-dip form to Gaussian distribution.
结果表明：随着聚焦距离的增加，焦面光强分布由中央凹陷状向高斯分布转变。
The results indicate that with the increase of focal length, the intensity distribution on the focal plane varies from central-dip form to Gaussian distribution.
结果表明：随着聚焦距离的增加，焦面光强分布由中央凹陷状向高斯分布转变。
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