dds

Direct Digital Frequency Synthesis ( DDS ) technology is realized on complex programmable logical component ( CPLD ) with hardware description language.

在复杂可编程逻辑器件 ( CPLD ) 上,用硬件语言实现了直接数字频率合成 ( DDS ) 技术.

Using T. coli DNA polymerase I, E. DDS Syndrom when Taking MDT

用MDT时的氨苯砜综合征

A Stepper Motor Precision Position Controlling Based on DDS Technology

基于DDS技术实现步进电动机精确定位

The DDS Design of Modulus 10 Phase Accumulator Based on BCD Code

基于BCD码的模10~i相位累加器DDS设计

The basic theories of the frequency synthesis , PLL , DDS, DDS + PLL are introduced first in this paper.

本文首先介绍了关于频率合成、锁相环频率合成、DDS频率 合成 、 DDS+PLL频率合成等的基本理论.

Design and implementation of data distribution service based on DDS

基于DDS模型的数据分发中间件的设计与实现

Design of Sine Signal Source Which can Overlapped Harmonic Based on DDS Technology

基于DDS技术的可叠加谐波的正弦信号源设计

The digital signal generator is constitutive of Single-Chip Microcomputer and accurate digital-to-analog converter and is based on the DDS technology. It has the characteristic of high frequency discriminability, good frequency stability and low distortion.

数字信号发生器模块基于直接数字频率合成技术（DDS），采用单片机和高精度D/A转换器完成，具有信号频率分辨率高、稳定性好、失真度小等特点。

In the Rubidium frequency standard, It is necessary to generate a fractional frequency signal. So DDS ( direct digital synthesis) is optimal candidate.

在铷原子频标中，需要产生带有小数频率的微波信号，DDS（Direct digital synthesis）逐渐成为实现该频率的最佳手段。

Application of the four DDS devices running in parallel to NMR

四路并行DDS合成技术在核磁共振中的应用

In this case the row returned to RPG is dependent on which of the duplicate key handling DDS keywords ( LIFO ( default), FIFO or LCFO) were used when creating the keyed logical file.

在这种情况下，返回RPG的行取决于创建键逻辑文件时使用的是哪个用于处理DDS关键字的重复键（LIFO（默认值）、FIFO或LCFO）。

A resource-base in DDS is introduced and a recursive generation method of model chain is represented to promote the efficiency of model chain generation process with an evaluation model to select a best one from all the model chains generated given.

本文介绍了决策支持系统中资源库的概念，提出模型链逆向生成的方法，这种方法能够有效地自动生成模型链，并给出了评估多个模型链优劣程度的一般模型。

DDS can achieve high accuracy, high speed, high reliability and other requirements.

DDS能够实现高精度，高速度，高可靠性等一系列要求。

A method of generating radar multi-target phase-coherence echo based on DDS is discussed.

介绍了一种基于DDS的雷达 多目标 相参回波信号生成方法.

This paper introduces a sort of high speed DAC using in DDS, she adopts the structure of CMOS current array.

文章介绍了一种用在DDS中的高速DAC，采用CMOS电流阵列结构。

Deposit-dip-spin ( DDS ) coating method, a composite nano-powder sample preparation method for atomic force microscope ( AFM ) measurement is introduced.

介绍了一种改进旋涂法 —— DDS 涂膜法 ( Deposit-Dip-Spin-coating), 主要用来制备纳米粉体原子力显微镜 ( AFM ) 分析样品.

This article describes the design of a linear sweeping frequency signal generator using DDS technology.

本文介绍了利用DDS来产生线性扫频信号的射频信号发生单元的设计.

PLL frequency synthesizer with DDS reference will adapt to local oscillator of modern radio.

采用DDS输出作为参考的PLL频率合成器非常适合用做现代电台的本振.

Adjustable-precision Cavity Vacuum Gauge Based on DDS

基于DDS的可调精度真空计

A new method of laser range finder based on DDS and DSP

基于DDS和DSP的一种新的激光测距方法

The hardware configuration of using DDS chip AD 9956 to realize the linear modulation function is introduced.

介绍了一种基于DDS芯片AD9956实现线性调频功能的硬件实现方法.

DDS-1 type m ulti-function electronic laboratory case can meet this requirement.

DDS - 1型多功能电子实验箱即可满足这方面的需要.

Development of DDS Digital Synthetic Frequency for Chirp Signal Generation

线性调频信号DDS频率合成源的设计与实现

Clear AFM images were ( obtained ) from PbZr _ ( 0.90 ) Ti _ ( 0.10 ) O _ 3-Fe _ ( 0.003 ) nano powder sample prepared by DDS method.

采用DDS法制备PbZr0.90Ti0.10O3-Fe0.003 ( PZT -Fe ) 纳米粉体样品,得到了清晰的AFM图像.

Impulse test. This procedure for the AD 9850 ( DDS ) Direct Digital Frequency Synthesizer C language source code.

脉冲发生测试. 此程序为AD9850 ( DDS ) 直接数字频率合成器C语言源码.

Specifically, the development of high speed A/ D converter, DDS technology, as well as the prevalence high speed DSP, FPGA have provided a solid hardware function for the radar receiver.

特别是高速多位（100MHz，12bit以上）A/D转换器和DDS技术的发展以及高速数字信号处理芯片（DSP）和FPGA的普遍使用，为雷达接收机提供了良好的硬件基础。

DDS-11 A digital conductivity instrument for laboratory measurements of conductivity of liquids.

DDS-11A型数字电导仪适用于实验室测量液体的电导率.

The transmitterof DHF uses DDS to synthesize frequency.

发射机采用直接数字频率合成器(DDS)生成频率,具有精度高、频率跳变速度快的特点.

Through the DDS CMOS chip AD 9851 , the system produces a 64 points sampling signal.

通过DDS芯片AD9851来产生相对于输入信号64倍频的高精度采样信号.

The technology of direct digital frequency synthesis ( DDS ) , is a new typed synthesizer technology and signal frequency methods.

直接数字频率合成技术,即 DDS, 是一种新型的频率合成技术和信号产生方法.