查询词典 digital data

Through analyzing the features and performances of CIC filters,HB filters and multiphase-filter,we combine them with decimators and decimate the A/D data,thus reducing the digital signal rate and the load of DSP when processing the base band signal.

通过分析CIC滤波器、HB滤波器和多相滤波器的特点和性能，将它们与抽取器相结合，对A/D转换后的数据进行抽取，降低了信号采样率，减轻了后续DSP处理基带信号的压力。

A number of GPIB data acquisition products appeared throughout the 1970s and early 1980s, including voltmeters, digitizers, multiplexers, switches, digital I/O, D/A converters, and simple arbitrary waveform generators.

一定数量的GPIB 数据采集产品出现在70 年代和80 年代初期过程中，包括电压表，数字化器，多重通道，开关，数字式I/O， D/A 交换器，并且简单的任意信号波形发电器。

Considering the significant practical meaning of experimental platform for network control system research, the author implements an Ethernet Networked Motion Control Open Platform, which includes a speed servo motor driver as a net node with embedded Ethernet interface using digital signal processor; a network controller based on PC which is convenient for realizing sorts of control algorithm; network flow disturbers, helping control on network congestion; a visual graphical monitor system on real time network data, displaying control system state curve dynamically.

系统选用电机速度伺服控制系统作为网络控制的目标对象，采用高性能数字信号处理器设计实现了内含以太网接口的电机驱动器网络化节点；设计了可方便实现各种控制算法的基于PC机的网络控制器；设计了网络流量干扰节点，可对网络拥塞程度实现定性控制；设计实现了图形化网络数据监视系统，动态显示控制系统状态曲线。

Satellite gravity field data recovered by digital global models with 2180 to 2360 order are mainly originated from the density variation in the depth of 1836 km, at which epicenters of most major structure earthquakes were located.

根据2-180阶与2-360阶的数字全球模型恢复的卫星重力场数据，主要源于地下18~36 km深处的密度变化，多数大地震的震源也正是位于该层段。

We choose 15257 face-on disk galaxies from Data Release 2 of Sloan Digital Sky Survey and statistically investigate their color magnitude relations.

在Sloan数字巡天计划第二批释放的数据中选择了15257个面向的盘状星系，统计研究它们的颜色星等关系。

Digital watermarking is an effective way for copyright protection in the internet age, it can identify whether the media is protected or not, tail the protected data spreading, distinguish facts and figments, control the illegal copies, solve dissensions of copyright and provide proofs for the court, and it has become a hot research topic in the multimedia security field.

数字水印技术是网络时期实现版权维护的有效方式，它能够判别对象是否受到维护、监督被维护数据的传布、入行真伪辨别、控制非法拷贝、解决版权纠纷并为法庭提供证据，现己成为多媒体信息安全范畴的一个研讨暖点。

Combined system simulation with optimal control, selected a typical water cooled primary/secondary chilled water system, used the research achievements of Annex 30 in IEA for the reference, this work firstly presents both the basic component models and the control system component models. Secondly gives the main models for parameter identification and experiment validation. Finally a dynamic digital simulator is set up using TRNSYS as the platform to substitute a real system to test and evaluate some kinds of online optimal supervisory control strategies after giving some essential data file input and finishing all the PID controllers'tuning.

本文将空调系统的仿真模拟与优化控制相结合，首先选择比较典型的水冷式二级泵集中空调系统，在国际能源组织IEA第30子课题Annex 30多年研究成果的基础上，建立了系统各设备的部件模型和控制系统部件模型，对主要模型参数的辨识方法进行分析，同时对其准确性给予验证；在此基础上，建立了以TRNSYS为仿真平台的集中空调水系统数字仿真器；通过必备数据文件的输入和对所有下位机控制回路PID参数的调试，最终完成可用于评估各种上位机优化控制方案的空调水系统数字仿真器。

The fore part of data acquisition is including:(1) adopting 1-wire digital thermometer DS181B20 to measure temperature;(2) adopting capacitive humidity sensor HSI101 to measure humidity.

数据采集部分包括(1)采用单总线接口的数字温度传感器DS18B20测量仓库温度；(2)采用HS1101电容式湿度传感器，通过其振荡测量电路，获得的频率信号与湿度值成近似线性关系，这样就可很容易的完成对仓库湿度的测量。

This PPML files clearly increases the variable data business card printing and membership card production efficiency, so that most of the digital business card printing and membership card making machine full-speed business card printing and making it possible for the member card.

这样PPML不白件不离灵验不天调低了可变数据制卡和会员卡制作的效果，使得不小大都数字制卡和会员卡制作机全速制卡和会员卡制作不败为不定。

The geophones are the key devices in the seismic exploration data gathering, which mainly include both of analog and digital ones.

地震勘探数据采集的关键器件是检波器，分为模拟检波器和数字检波器。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。