数值信号

In general, a frame is"overcomplete"than a basis, which makes it have numerical stability.

一般地，小波标架比小波基具有&更多&的元素，这使得它用于信号分析时具有数值稳定性。

Experiment results show that Ridgelet transform is more efective than the wavelet transform in seismic signal denoising.

数值实验结果表明，Ridgelet变换在地震信号去噪方面优于小波变换。

Both real and imaginary components of the known signal are equalized with the real-valued equalizer coefficient.

已知信号的实部和虚部分量用实数值的均衡器系数被均衡。

When AVR is added to other signals, such as speed, angle, active power, et al., power systems have equal damping is a constant that does not change on any conditions of general damping.

在AVR的基础上附加转速、功角、功率，乃至于附加远方机组任意信号的复杂多变量励磁控制方式下，电力系统总阻尼保持守恒，其数值与单纯AVR控制时相等。

This problem is also important and valuable in Nonlinear Optics. It will be very helpful to understand how the aberrations affect the course of three- wave mixing, such as the change of conversion efficiency, the distribution of intensity and phase.Small signal solution of aberrated second harmonic generation is deduced from three-dimension three wave coupling functions. The numerical work gives out lot of results of different aberrations. The effects of the fundamental waves aberrations, which will change the conversion efficiency, distribution of intensity and phase in the frequency conversion, is analyzed. It shows that when walk-off and diffraction effects could be ignored approximately estimation of the phase distribution of second-harmonic wave could be done. The far field divergent angle and second moment radius of harmonic wave will vary with the aberration of fundamental wave, but the far field divergent angle will be obviously smaller than that of fundamental wave. The phase distribution of both fundamental and harmonic wave is measured using Hartmann-Shack wave front sensor in the experiment with 1064nm and 790nm lasers, respectively. Results are given.

首次从三维三波相互作用方程组推导得到了位相畸变光束倍频的小信号解；通过建立国防科学技术人学研究生院学位论文三维数值模型，编写相应仿真程序，首次得到了位相畸变光束倍频过程的大量计算结果，深入细致地研究了位相畸变光束经非线性光学频率变换后谐波的转换效率、光强分布、位相分布以及影响它们的各种因素；得出谐波的远场发散角和光斑二阶矩的变化规律会因为基波像差的不同而不同，但谐波的远场发散角明显地比相应基波的小的结论；得到了在走离效应和衍射效应等影响许多因素可以忽略的情况下，位相畸变传递到二次谐波的估算式；举例分析了KDP三倍频方案中，基波位相畸变对二次谐波和三次谐波的影响；实验工作中，用哈特曼一夏克传感器分别对IO64nm倍频过程和790飞秒超短脉冲倍频过程中的基波和谐波的位相分布进行了测量，给出了相应结果。

Small signal solution of aberrated second harmonic generation is deduced from three-dimension three wave coupling functions. The numerical work gives out lot of results of different aberrations. The effects of the fundamental wave's aberrations, which will change the conversion efficiency, distribution of intensity and phase in the frequency conversion, is analyzed. It shows that when walk-off and diffraction effects could be ignored approximately estimation of the phase distribution of second-harmonic wave could be done. The far field divergent angle and second moment radius of harmonic wave will vary with the aberration of fundamental wave, but the far field divergent angle will be obviously smaller than that of fundamental wave. The phase distribution of both fundamental and harmonic wave is measured using Hartmann-Shack wave front sensor in the experiment with 1064nm and 790nm lasers, respectively. Results are given.

首次从三维三波相互作用方程组推导得到了位相畸变光束倍频的小信号解；通过建立三维数值模型，编写相应仿真程序，首次得到了位相畸变光束倍频过程的大量计算结果，深入细致地研究了位相畸变光束经非线性光学频率变换后谐波的转换效率、光强分布、位相分布以及影响它们的各种因素；得出谐波的远场发散角和光斑二阶矩的变化规律会因为基波像差的不同而不同，但谐波的远场发散角明显地比相应基波的小的结论；得到了在走离效应和衍射效应等影响许多因素可以忽略的情况下，位相畸变传递到二次谐波的估算式；举例分析了KDP三倍频方案中，基波位相畸变对二次谐波和三次谐波的影响；实验工作中，用哈特曼-夏克传感器分别对1064nm倍频过程和790飞秒超短脉冲倍频过程中的基波和谐波的位相分布进行了测量，给出了相应结果。

First, the domestic and oversea research actualities of friction dynamic characteristics have been summaried, the manifestations and formings of these friction phenomena are discussed.

因此本课题基于摩擦实验研究，对摩擦特性进行分析，提出新的宏观经验模型结构，并给出相应的摩擦信号处理和参数识别过程，此外，运用数值方法对滑动导向系统的动力学特性进行了探讨。

Describes a numerical model which is applicable in the study of wide beam HF ground wave radar's signal processing.

根据高频无线电波海洋回波谱理论，结合高频地波雷达单站探测的实际应用，建立了一个适合于研究高频地波雷达信号处理的海面回波多普勒谱的数值模型。

Areas in which toolboxes are available include signal processing, control systems, neural networks, fuzzy logic, wavelets, simulation, and many others.

MATLAB 的工具箱函数涉及到信号处理，控制系统，神经元网络，模糊逻辑，小波，数值模拟以及其他许多应用领域。

Not only C\C++ functions and functions in toolboxes can be transferred, but also the powerful graphic function can be used in the way of MATAB engine.

它集数值分析、矩阵运算、信号处理和图形显示于一体，构成了一个方便的i界面友好的用户环境。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。