采样

基本解释 (translations)

sampling

词组短语

take sample

与采样相关的网络例句 [注：此内容来源于网络，仅供参考]

Double channel bandpass sampling method for wide band IF signal is presented to settle the problem of blind zone,which exchanges one more sampling channel for simplification of clock circuit and band pass filter.As a practical reconnaissance receiver, real-time processing performance must be considered.Digital channelizing method lays the base of parallel processing by multi DSP chips and discarding of the redundant data resulting from double channel bandpass sampling.

针对带通采样存在着频率覆盖盲区的问题，提出了宽带中频信号双通道带通采样的方法，通过增加一个采样通道既解决了传统处理盲区方法中设计复杂采样时钟电路、高矩形系数滤波器的困难，还缓解了后续DSP处理压力。

The paper puts forward the regionalization principle according to the structural feature of geographical spatial environment.

本文根据地理空间环境的结构特征提出了分区的原则，在分析研究内容的主要影响因子的基础上，利用多种数据源，在分区指标的支持下进行空间叠置分析，建立采样均质区，形成样点布设支持的空间背景数据库；同时，本文利用组件式地理信息系统的二次开发能力，设计了多种针对采样均质区自动样点布设的方法，样点布设的结果是形成一个点状空间图层；针对如何定位预先设计的采样点问题，本文又提出了采样导航的概念，它是通过GPS和GIS集成实现的，定位信息经过投影转换，实时显示在采样点空间图层上，参照道路、居民点等背景图层进行采样点定位，并根据空间搜索实时寻找最近采样点，当到达采样点时予以提醒，并进行相关的采样。

In this dissertation, digital lock-in detection techniques under integer period sampling and non-integer period sampling are separately investigated (1) Under integer period sampling, digital signal sequence is acquired through sampling the measured signal, but digital reference sequence is acquired through mathematical operation, then digital lock-in detection can be realized by calculating crosscorrelation function of digital signal sequence and digital reference sequence Harmonic measure is also analyzed, and a method of measuring harmonic of a periodic signal under aliasing is put forward.

本文对使用采样ADC把模拟信号转换为数字信号并通过计算数字信号的相关函数来实现锁定检测的技术进行了研究，在此基础上设计了一个多功能的数字LIA并在一些科学实验中进行了应用。本文对整周期采样和非整周期采样时的数字锁定检测技术分别进行了研究。(1)在整周期采样时，对被测信号进行采样得到信号序列，而参考序列由数学运算得到，通过计算信号序列和参考序列的互相关函数就可实现锁定检测。

The study of heterogeneous mapping algorithm based on the human eyes space-variant system. According to the "one-one mapping ring" and mapping direction we classify the mapping transformation into two sorts: forward algorithm and reverse algorithm. Based on the general rules of constructing this mapping model linear model and arctangent model are studied and verified.

本文基于人眼的空间分辨率可变视觉理念，研究了非均匀采样变换实现算法和非均匀采样变换的尺度轴转换与角度轴转换具有的"一一映射环"以及非均匀采样实现的两类转换：正向转换与逆向转换；在非均匀采样转换模型的基本构造规则基础上，讨论了区别于对数极坐标转换的线性非均匀采样模型及反正切非均匀采样模型的建立。

First,by choosing a control function for a local adaptive optimal neighborhood,the filter window is set in the region with similar normals to avoid the problem of shrinkage and over-smoothing.

首先通过自适应选取最优邻域控制函数来将滤波窗口限制在顶点法向量相近的区域，以防止滤波后模型的收缩和过光顺；然后运用协方差矩阵分析的方法，在最优邻域内计算出各采样点的法向量和曲率；最后以采样点滤波参考平面为基准，分别平滑采样点的法向量和位置，即先对采样点的法向量进行多边平滑，然后根据新的法向量来多边平滑输出各采样点的位置偏移量，最后在法向方向上移动该顶点，以达到降噪的目的。

Selection of monitoring spotsWith the consideration of energy structure in Shenyang, weather conditions , pollution levels of major atmospheric pollutants, the health effects of air pollution, and the acquirability of historical records on the air pollution, 1991 -2001 environmental quality monitoring data of Shenyang were acquired and analysed.

颗粒物样品的采集与测定(1)大气污染粉尘采样：在每个监测点设置AN-200自动空气采样器，分夏季和冬季各采样一次，每次采样时间一周，每天24小时连续采样，同时记录气温、气压和相对湿度。

As a differential detection is used between the intercarrier, the proposed algorithm overcome the high sensitivity to timing error of conventional algorithm and is robust to multi-path. The effect of sample frequency offset can't be ignored in a continuous OFDM system of a large number of subcarriers. The estimation precision of the conventional algorithm is low and the realization is complex. A joint estimation of sample frequency offset and fine frequency offset based on difference operation is proposed. As averaging use a large number of samples in a maximum likelihood algorithm, the estimation precision is very high. The use of difference operation cancel the effect of carrier frequency offset, and the proposed sampling frequency estimation algorithm is robust to carrier frequency offset.

最后，本文对连续系统中的采样频率和载波频率精同步技术进行较为深入的研究，由于子载波数目大的连续OFDM传输系统中，采样频率偏差不可忽视，以往的采样频率估计方法精度低、实现复杂，因此本文提出了一种基于差分处理的采样频率偏差和精载波频率偏差联合估计算法，利用了最大似然算法进行采样频率偏差的估计，由于采用了差分处理方法，消除了载波频率偏差对采样频率偏差估计的影响，采用的最大似然算法对大量样点进行平均化处理，所以，相对以往算法，提出的联合算法估计精度高，而且采样频率偏差估计对载波频率偏差具有鲁棒性。

First, from the point of view of production and management, the importance for developing TTU is pointed out.the status in quo of technology,The direction of progress,The demand of practical and fundamentality in Distribution Automation are analyzed for Transformer Terminal Unit. The function of equipment and technical specification which meet demand of practical duty are indicated; Second, the scheme of synchronous sampling,quasi-synchronous sampling,non-integer cycle sampling,nonsynchronous sampling and algorithm are analyzed in detail. Then,the scheme of nonsynchronous sampling and multi-chunnel is ascertained. Moreover, the method of disposal sampling data for increasing precision which calculate the number of sampling per cycle dramatic by searching zero is introduced. The technique for analyzing data,stating data,storage data for Electrical Power Quality and control scheme for compensation capacitor are explained also. Finally, The scheme and structure of hardware,key circuitry using 80C196 singlechip,the scheme and ideology of software and flow chart of part software is introduced simply.

文中首先从电力生产、管理角度出发，指出了研制配变监测终端的重要意义，分析了配变监测终端的技术现状、发展趋势、现场需求以及在配网自动化中的基础地位，提出了满足实际运行要求的装置功能、技术要求；然后对目前常用的同步采样、准同步采样、非整周期采样、非同步采样的方案和算法进行了详细的分析、比较、筛选，确定了非同步采样和顺序采样的方案，并提出了一种寻找过零点从而动态计算每周采样点数的提高精度的采样数据处理方法，文中对装置中电能质量分析、统计、存储的方法以及补偿电容器的控制方案和投切原则也做了重点说明；最后，对应用80C196单片机系统研制的装置的硬件方案、结构以及关键电路和软件设计思路、方案、部分主要软件模块的流程图做了介绍。

Aimed on this research theme, this thesis studies some key issue of nonuniformly signal sampling theory and its application.

随着高速采样技术发展，对非均匀采样信号的研究也成为信号处理领域的一个重要研究内容，如何提供更精确的采样时基，或者是如何对采样时基进行校正，以及利用已知的时基偏差，对采样信号进行重建，已成为在工程应用中一个重要组成部分。

The method for determining a phase-noise spectrum comprises generating real complex samples, by digitally sampling a phase component and phase quadrature component of the input signal in baseband, determining ideal complex samples from generated real samples, establishing complex quotients from the real and ideal complex samples, generating modified complex quotients by assigning the value 1 to the complex quotients, and subjecting the modified complex quotients to a Fourier transform.

所述方法包括以下步骤：通过对基带中的所述输入信号的相位分量和相位正交分量进行数字采样，产生实际复数采样Areal(n(S100)；根据产生的实际采样Areal(n确定理想复数采样Aideal(n(S101)；根据实际复数采样Areal(n和理想复数采样Aideal(n形成复数商ΔA1(n＝Areal/Aideal；通过对所述复数商指定值1，产生经修正复数商B(n(S106)；以及对经修正复数商B(n进行傅立叶变换(S107)。

与采样相关的网络解释 [注：此内容来源于网络，仅供参考]

adaptive sampling：自适应采样

欠采样:non-Nyquist sampling | 自适应采样:adaptive sampling | 可调节采样:Adjustable sampling

overburden sampling at depth：深层采样

采样层位 sampling horizon | 深层采样 overburden sampling at depth | 采样误差 sampling errors

Sampler, box type bed load：匣式推移质采样器

"河床质采样器","Sampler, bed material" | "匣式推移质采样器","Sampler, box type bed load" | "瞬时垂直悬移质采样器","Sampler, instantaneous vertical type suspension load"

canister：采样罐

* 温度控制KI 铜采样管(denuder)在用DNPH 采样管(cartridge) 对醛酮类物质(carbonyl)采样时以去除臭氧* 采样罐(canister)流量: 标称10 cc/min (可选择范围)* 采样管(cartridge)流量: 标称2升/分钟(可选择范围)* 采样罐(canister)压力测量范围: 0

Decimate By：(压缩采样倍数) 将被选活动窗口的数据的采样率作n倍压缩

Cumulative Sum (累计求和) 对活动窗口作累计求和运... | Decimate By (压缩采样倍数) 将被选活动窗口的数据的采样率作n倍压缩. | Moving Average (移动平均值) 将被选活动窗口的数据的采样率作移动平均. 得到平滑的曲...

sampling by electrostatic precipitation：静电沉淀法采样,静电集尘法采样

取样台 sampling bench | 静电沉淀法采样,静电集尘法采样 sampling by electrostatic precipitation | 过滤采样 sampling by filtration

Sample rate：采样速率

为了保证转换的正确完成,采样速率(Sample Rate)必须小于或等于转换速率. 因此有人习惯上将转换速率在数值上等同于采样速率也是可以接受的. 常用单位是ksps和Msps,表示每秒采样千/百万次(kilo

Adjust Sample Rate：调整采样率,这个操作不能改变波形的采样率,而是调节声卡播放该波形时用的采样率

Adjust Sample Rate:调整采样率,这个操作不能改变波形的采样率,而是调节声卡播放该波形时用的采样率. | Convert Sample Type:转换采样格式,这个操作可以改变当前波形的采样率... | Edit Tempo:编辑节拍数,实际上就是输...

sampler：采样

NumarkDM-2175XLS多功能DJ调音台采用先进的DSP数字处理控制技术,可进行数字采样(Sampler),其采样频率为44.1kHz(一般CD唱机的采样频率也是44.1kHz),采样时间由45s\16bit数字效果可扩展至180s,4种可选择的数字采样记忆库和延时或混响效果,

Systematic sampling：系统采样

2、采样(Sampling)和系统采样(Systematic sampling):采样指基于手术前影像学或手术中发现,切取几个有代表性的纵隔淋巴结;系统采样指根据原发肿瘤特点切除预先选定的几战区域淋巴结