查询词典 sampling methods

Digital data acquisition principles and practices are discussed, including the relationship between the sampling rate and signal frequency.

数字数据采集的原则和做法进行了讨论，包括之间的采样率和信号频率的关系。

On the basis of 16 bit digital signal processing TMS320VC5402, the system of speech information sampling is designed and the memory of digital speech signal is realized. The design of hardware and the program flow chart of the system are proposed.

在研究数字信号处理的基础上，实现基于16 bit数字信号处理器TMS320VC5402的语音信号采集和数字信号扩展存储系统，给出了系统硬件设计和软件流程图。

A set of high-sampling rate,long-term data acquisition and analysis system based on the virtual instrument LabVIEW and the high-speed digitizer NI PCI-5124is designed in this paper.

设计一种基于虚拟仪器LabVIEW和高速数字化仪NI PCI-5124的高采样率、长时间的数据采集分析实验系统。

Worse, you can't rely on sampling because the system is discontinuous.

更糟糕的是，你还不能依靠抽样的方式来对系统进行测试，因为它是非连续的。

Chapter six presents a two-waves sampling method to estimate a distribution function of a discrete random variable Y.

第六章研究在数据缺失机制形式未知时，通过两步抽样得到了分布函数的相合的估计量，且该估计量是渐近正态的。

With ideal sampling the method used in continues area can be used in discrete area , so we get the Discrete Fourier Series and Series Fourier Transform.

利用连续域的结论，通过理想采样，得到了离散傅里叶级数和序列的傅里叶变换，找到了离散域的频谱分析方法。

Because it is necessary for wind speed estimation to consider the variation of air density, a method to implement air density estimation by discrete sampling of the state of DFIG is proposed.

准确的风速估计必须考虑空气密度的变化，给出通过对风机状态的离散采样实现空气密度估计的方法，利用修正后的空气密度对风速进行更为准确的估计，从而得到最优的转速设定，实现风能的最大捕获。

Then we re-sampling all signals defined on the surface of the original triangle mesh at the vertices of the spherical subdivision mesh and get a set of discrete geometry signals with subdivision topology which can be compressed by using spherical wavelet.

于是，在参数域内位于细分网格顶点处对定义在参数网格表面上的各种几何信号进行重采样，可得到新的具有细分结构的几何信号近似表示原始几何信号，以此满足球面细分小波对处理对象的细分结构要求，从而使得用球面细分小波对几何信号进行压缩得以实现。

For the diffractive optical element realizing beam shaping in the fractional Fourier transform domain,the transform matrix calculated by the discrete sampling points was compared with that calculated by the Fresnel integral,and the discretization error of the intensity distribution on the output plane was qualitatively obtained.

针对分数傅里叶变换衍射光学光束整形器件，比较了按离散点与按菲涅耳积分计算得到的变换矩阵间的差距，从中分析得出按离散点计算的变换矩阵引入的离散化误差与分数傅里叶变换系统参数的关系。

After Using the off-line data sampling technology and simultaneous lock, parallel A/D convert technology, the time discrimination ratio was decreased to a duration of 0.83μS. The color adjustment panel and unfactual page exchange technology was used to show arc moving procedure in the software design.

采用硬件时序电路控制数据采集过程、同步锁存和并行模数转换等硬件技术大大地提高了测试过程的时间分辨率；软件设计中，采用调色板技术实现图象的灰度显示，采用虚拟页切换技术实现电弧运动过程的动画显示；采取软硬件结合的办法，可随意改变传感器阵列在二维平面的排列形状和疏密程度，这可以扩大电弧研究工作中测试系统的适用范围。

Pachomius manual labour was organized as an essential part of the monastic life; and since it is a principle of the monks as distinguished from the mendicants, that the body shall be self-supporting, external work of one sort or another has been an inevitable part of the life ever since.

根据圣pachomius体力劳动组织作为一个重要组成部分寺院生活；以来，这是一个原则的和尚，作为有别于乞丐，该机构应自支撑，对外工作的这种或那种已一个必然的一部分，生活至今。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。