光纤

Simulation result proved that the wavelet method has better performance in removing the noise of FOG's output signal, and the accuracy of alignment and navigation can be improved.

研究表明，基于小波的去噪方法能够更好地估计光纤陀螺的输出信号，具有更为理想的去噪效果，有效地解决了对准与导航过程中光纤陀螺噪声的影响，提高了对准与导航的精度。

In the paper, based on the analysis of output noise of FOG, wavelet threshold de-noising theory is applied in FOG's signal processing, and the method is compared with Strong Trace Kalman Filtering optimal estimation method based on ARIMA model.

在分析了光纤陀螺输出噪声的基础上，将小波阈值去噪理论应用到光纤陀螺信号处理中，并与基于ARIMA模型的强跟踪Kalman滤波去噪方法进行了比较。

Owing to the variety of the temperature will make the stability of the FOG suffer the influence, so must proceed to collect to the temperature signal of the FOG , passing the intelligence system to proceed the analysis to the temperature signal, then within the scope of proceeds the adjustment makes its accuracy kept to need in of.

鉴于温度的变化会使光纤陀螺的稳定性受到影响，所以必须对光纤陀螺的温度信号进行采集，通过智能系统对温度信号进行分析，然后在进行调整使其精度保持在所需要的范围内。

A theoretical model is proposed to calculate the lasing wavelength of free-running Ytterbium-doped fiber lasers.

为了更好地设计掺镱光纤激光器，提出了一种用于确定自由运转的掺镱光纤激光器激射波长的计算模型。

The results have been compared with that by using coupled mode theory , Rouard s method and fundamental matrix method, and the accuracy.

用这一方法计算了均匀光纤光栅布拉格相位匹配、失配情况和非均匀光纤光栅的反射系数，并将其结果与用耦合波理论、Rouard方法以及基础矩阵方法的结果进行了比较，并检验了这些方法的精度。

The model of full vector Galerkin finite element method with transparent boundary conditions is established.

建立了基于透明边界条件的全矢量迦辽金有限元法分析二维光子晶体光纤的模型，并对椭圆芯等5种高双折射光子晶体光纤基模的模式双折射、限制损耗及色散特性进行了数值分析和比较。

A new type of geophone is presented,based on the narrow band transmission and free of back reflection features of long period fiber grating.

基于长周期光纤光栅能透射特定波长的性质，以及其无后向反射的优点，提出一种新型的长周期光纤光栅地震检波器系统。

Experiments were made to investigate how the spectrum of the stimulated Raman scatting gain changes with germania concentration and different pump power.

研究了受激拉曼散射增益系数和增益谱与泵浦功率、光纤掺杂浓度的关系，得出增益系数和峰值频移量由光纤特性决定，而与泵浦功率无关的结论。

A novel fiber optical tupered coupler is proposed with its waveguide refractive index gradually changing, induced by germania defects under the UV irradiation.

提出了一种光纤波导折射率渐变的新型锥形耦合器件，其原理是基于光纤中Ge缺陷在紫外光照射下而产生的光致折射率的变化。

The new fluoride glass wire, or optical fibre, is a major improvement over the optical fibres now used in many modern communications systems.

这种新型的氟化玻纤或光纤产品相比较目前被广泛运用在现代通信系统中的光纤产品，有了巨大的改进。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。