dds

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.

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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。

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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.

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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.

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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。

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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

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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.

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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.

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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.

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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

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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。

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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.

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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.

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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。

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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）。

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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。

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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。

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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

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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.

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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

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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.

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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.

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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

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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

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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.

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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.

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Adjustable-precision Cavity Vacuum Gauge Based on DDS

基于DDS的可调精度真空计

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

用MDT时的氨苯砜综合征

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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

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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.

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