查询词典 spectral

First, we divide the input signal into four non-uniform subbands via discrete wavelet transform. In addition, a nonlinear Teager energy operator is then utilized into each subband signals. We show that the TEO can decrease the influence of noise on subbands significantly. Besides, the other advantage is suitable for the result of subband auto-correlation function.

首先，离散小波转换将输入讯号分成四个不均匀大小的子频带，而在每个子频带上采用一种非线性的Teager能量运算(Teager Energy Operator， TEO)以有效抑制噪音在各子频带的影响，而另一优点就是有助於子频带自我相关函示(spectral auto-correlation function， SACF)之结果。

In this book introduce the modern spectral estimation of the basic theory and methods.

在本书中介绍了近代谱估计的基本理论和方法。

Kay Modern Spectral Estimation Theory and Application of.

凯依的现代谱估计原理与应用。

A spectral selection method in He-Ne laser by Fabry-Perot etalon is discussed in this paper.

提出一种在He-Ne激光器中加入法布里珀罗标准具来选择输出谱线的方法。

A Fabry-Perot etalon with high spectral resolution is used as the frequency discriminator in the direct detection wind lidar.

在直接探测测风激光雷达中，多普勒频移由高分辨率的Fabry-Perot标准具检测得到。

In fact, the popular semi-implicit integration scheme of spectral model still includes some important linear terms difference by time explicit scheme. Furthermore, these terms are directly related with fast gravity waves in the forecasting equation.

国际上现行的谱模式半隐式时间积分方案，实质上还包含了采用显式格式的线性项，且这些项在预报方程中是与激发内、外重力快波直接相关的大项。

Spectral resolution and spatial resolution of the high temporal resolution image overlays scope with valid the wave band number etc. characteristic, the part caused the extraction of icing zone information in unilateral and judge way to the factitiousness; researchers of the past hangs a neglect of sand in the sea , also influencing an information to withdraw of the accuracy and the integrity.

高时间分辨率影像的空间分辨率、波段的光谱覆盖范围和有效波段数目等特征，部分导致了渤海结冰范围信息提取的片面性和对人为判读的依赖；前人方法对海区悬沙的忽视，也影响了信息提取的正确性和完整性。

In order to compute the converse of Laplacian algorithm rapidly, the theory of helical spectral factorization method is applied.

为了实现其中Laplacian算子的快速求逆，文中引入Claerbout螺旋坐标系谱因式分解理论。

An optimal control law is obtained by minimizing the average performance through spectral factorization and a practical control method for integrator and dead time plant is presented in the presence of plant uncertainty and control energy constraint.

首先基于一类随机模型误差的描述，定义了一个平均意义上的包含跟踪误差和控制能量在内的性能指标；然后通过谱分解极小化该性能指标，导出一个最优的控制律，从而为模型不确定性和控制能量约束并存条件下一类非自衡对象的最优控制问题提供了一种实用的控制方法。

The inverse fast Fourier transformation was applied to generate road irregularity and its velocity term of grade B according to power spectral density of road roughness.

结果表明：曲线梁桥的位移和内力动力放大系数大于直线梁桥的，且不同位置不同项目的内力和位移之间的动力放大系数的数值差别很大。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷