查询词典 sampling error

The error signal is smoothed by loop filter, then it is used to change the control register of interpolator and decimator: The proposed algorithm can track the frequency shift of sampling clock. The algorithm is simulated in both AWGN and multipath fading channel.

这种方法在发送端相邻载波间采用差分QPSK调制，在接收端利用QPSK的差分解调信号获得同步误差信号，从而获得关于OFDM符号同步和采样钟同步调整的算法，其特点是无需专门的同步导频信号。

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。

At the same time, the thesis points out more calculated data and more accurate on fire localization results. It is beneficial to decrease fire localization error by increasing band width of FIR filter to solve the problem of insufficient sampling points at an early stage of fire.

本文还通过仿真结果指出在带通滤波器的基础上，计算点数越多，定位估计就越准确；在火灾前期，输入的采样点数不够多的情况下，适当加宽带通滤波器的频率上限，有助于减小火灾定位误差。

Investigation indicates that the error of frequency estimation is proportional to the sampling rate, while that of initial phase independent of it.

研究表明频率估计的误差在采样点数确定时正比于采样率，而初相估计的误差则不受采样率的影响。

Switching Power Supply with the traditional distinction between :(1) not only the output voltage feedback, feedback from the average input current;(2) Current benchmarks signal voltage error signal and full-wave rectifier voltage signal sampling the product.

与传统开关电源的区别是：不仅反馈输出电压，还反馈输入平均电流；(2)电流环基准信号为电压环误差信号与全波整流电压取样信号之乘积。

The discrete mathematical models of the roundness and cylindricity EST are established; the mathematical models of the generating line straightness, axis straightness, coaxality, circular run—out and total run—out error of the revolution workpiece are put forward and established first based on the EST; the method about how to sample and to process sampling data are given when these models are applied to measure workpleces.

其主要内容是：针对长期以来国内对回转误差运动的有关定义的争论，对回转误差运动的本质进行了讨论，进一步明确了静心与静轴，动心与动轴的概念，并对此进行了数学推导，给出了相应的数学模型；统一了"平动说"和"瞬心说"关于回转轴线的定义，指出了两种学说各自的力学基础和它们的一致性。

For the minimum dry density test of sand, test devices are improved to simplify the procedures and the test steps are adjusted to reduce the measurement error. The reverse graduated cylinder method and the tilting graduated cylinder method are recommended as the best methods for minimum dry density test and for leveling sand surface respectively. The optimum sampling quantity and the times of reversing graduated cylinder are studied.

对最小干密度试验，改进了试验装置以简化操作手续；调整了试验步骤以减小测量误差；推荐只使用量筒倒转法测量，用量筒倾斜法整平砂面；研究了最佳取样量和量筒倒转次数。

Provide a comprehensive inspection and sampling inspection methods, such as flexible, easy to grasp the macro level Cong quality data and detailed analysis of each type of error

提供全面检查和抽检等灵活检查方式，便于丛宏观上把握数据的质量情况，并能详细分析每一种错误类型

Given system parameters, the relational curves of the mean square error vs sampling step length are presented for different delay time.

提出了减小延迟同步误差的一些方法，得到一些对混沌同步和混沌控制应用有意义的结果

To meet the common demands of the heterodyne signal process system, a phase measurement system based on dual-differential phase discrimination is studied and applied. With the frequency range of 5kHz-50kHz, this system has sampling rate of 10/sec, stability of ±0.0036°, maximum error of ±0.06°, and it can measure the zero point of phase angle.

围绕高精度外差信号处理系统的一般要求，研究和实现了基于双向差动鉴相的相位测量系统，在5kHz-50kHz的范围内、采样速率10次／秒时，示值稳定性优于±0.0036°，最大误差小于±0.06°，可以测量零相位。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。