介绍了利用直接数字合成技术产生频率扫描信号的新方法。
A novel method of direct digital synthesizing frequency sweep signal is presented.
此方法利用直接数字合成技术完成对方波的频率和振幅的调整。
Direct digital synthesis is used for modulating the frequency and amplitude of the square wave.
目的：设计一个采用直接数字合成技术的电流模式多频阻抗激励源。
With the appearance of DDS ASIC, Direct Digital Synthesis(DDS) technology is wide ranging applied.
目的：比较两种基于直接数字合成技术的阻抗激励源的性能，为以后阻抗系统设计提供指导。
AIM: to compare the performance of two exciting sources based on direct digital synthesis (DDS) technology and to present some advice for the future system design.
在此基础上，介绍了小数分频器在直接数字频率合成技术和步进电机驱动速度控制中的两种常见应用。
Applications of decimal Fraction frequency divider in the area such as direct digital frequency synthesis technology and stepper motor drive speed controller a re introduced.
本文介绍了直接数字合成（DDS）技术在激光相位测距仪中的应用。
This paper introduces the application of direct digital synthesizers (DDS) technique in laser phase distance measurement.
系统采用直接数字合成（DDS）技术构建正弦波发生器，实现幅值、频率、相位等连续调节；
The system adopts direct digital synthetic (DDS) technology for building the sine wave generator to realize continuous regulation of amplitude, frequency and phase modulation.
本文介绍了一种基于CPLD的直接数字频率合成（DDFS）的实现方法，详细阐述了采用此技术设计多功能信号发生器的方法。
This paper introduces a design of Direct Digital Frequency Synthesis(DDFS) based on CPLD, and describes clearly the design method of a multi-function waveform generator using DDFS.
首先，本文对数字频率直接合成(DDS)技术的特点进行介绍，提出一种基于DDS技术的任意波形发生器(AWG)的改进结构。
First of all, this thesis introduces the features of Direct Digital Frequency Synthesis (DDS) technique and gives a new structure of the Arbitrary Waveform Generators (AWG) base on DDS technology.
介绍了基于直接数字频率合成技术的双通道任意波形信号发生器。
The double channel arbitrary wave generator based on direct digital frequency synthesis is introduced.
介绍了锁相环(PLL)技术和直接数字式频率合成(DDS)技术的基本工作原理，给出了一种提高DDS输出频率精度及减小其相位截断误差的方法。
This paper introduces the theory of the phase-locked loop (PLL) and the direct digital synthesis (DDS), a method to improve the precision of DDS and reduce its phase truncation error is also given.
采用高精度的直接数字频率合成（DDS）和数字锁相环技术，实现了高频率跟踪精度。
DDS and digital phrase-lock technology have been applied in FPGA to improve the accuracy of frequency tracking.
直接数字式频率合成(DDS)技术是一种全数字频率合成技术，其特殊的原理和结构使它具有多种调制能力。
Direct digital synthesis (DDS) is an all digital frequency synthesis technique. Because of its special theory and construction, it has many kinds of modulation capability.
直接数字频率合成技术(DDFS)是一种先进的频率控制技术。
Direct digital frequency synthesis (DDFS) is an advanced technique for frequency synthesis.
直接数字式频率合成技术(DDS)是一种先进的全数字频率合成技术，本文基于DDS的相位调制功能，给出了一种DDS数字移相器的设计方案。
Direct digital synthesis (DDS) is an advanced all digital frequency synthesis technology, based on the PM function of DDS, this paper gives the design scheme of a DDS digital phase shifter.
采用直接数字频率合成(DDS)技术，实现波形发生器。
It also presents the realization of wave form generation with DDS technology.
这种直接数字式频率合成技术(DDS)具有频率值转换速度快、频率值分辨率高、控制频率的相位值连续等优点。
The technology of DDS has many values, such as the speed of hopping frequency is very high, the resolving power of frequency is also high.
提出了一种基于改进直接数字频率合成(DDS)技术的现场可编程门阵列(FPGA)数字调制器设计与实现方法。
In this paper a method of designing and implementing Field Programmable Gate Array (FPGA) digital modulator based on the improved Direct digital Synthesizer (DDS) technology is presented.
该系统采用了直接数字频率合成技术(DDS)和并发处理技术，提高了系统的性能和处理速度，较大程度地减少了硬件延时。
The system USES direct digital synthesize (DDS) and parallel processing technique, improves the performance and speed of the processing, and reduces the hardware delay mostly.
该芯片采用了改进的直接数字频率合成算法、流水线结构与ROM分时复用技术，保证了芯片的高性能和速度，节省了芯片面积。
A modified direct digital frequency synthesis (DDS), pipelined structure, and time-sharing ROM are adopted in the chip, for saving chip area and ensuring high performance and speed.
系统采用计算机控制下的直接数字频率合成(DDS)技术，实现电调谐波长扫描。
Using DDS (Direct Digital Synthesizer) technique under control of single-chip computer, electronic-tunable wavelength scanning is realized.
直接数字频率合成(DDS)技术是目前广为应用的一项频率合成技术，它具有频率转换时间短、频率分辨率高、可编程等特点。
DDS (direct digital synthesis) is a sort of frequency synthesis technique, which has advantages such as short frequency conversion time, high resolution in frequencies, programmability and so on.
数字查表法合成周期信号是一种最常用的直接数字频率合成技术。
Digital look up table method for synthesizing periodic signals is the most popular technique for direct digital frequency synthesis.
介绍了一种基于直接数字波形合成技术的通用雷达回波模拟器。
In this paper, one general radar echo simulator based on DDWS technology is introduced.
简要介绍了基于直接数字合成（DDS）技术的数字T/R组件的基本原理，对基于DDS的相控阵数字发射组件进行了实验研究，文章给出了实验结果，并进行了分析。
The principle of digital T/R module based on direct digital synthesis (DDS) technology is proposed, and the experiment results on the digital T/R module are given in this paper.
直接数字合成是先进的频率合成技术，给出了直接数字合成器的设计方法和实现技术。
Direct digital synthesis is a kind of advanced technique on frequency synthesis, in this paper, the design and realized technique of DDS is given.
本文首先介绍了直接数字频率合成技术的原理和结构，并分析了其噪声来源和抑制方法。
Firstly, this paper introduced the principle and structure of direct digital frequency synthesis and analyzed the source and suppression methods of frequency noise.
本文首先介绍了直接数字频率合成技术的原理和结构，并分析了其噪声来源和抑制方法。
Firstly, this paper introduced the principle and structure of direct digital frequency synthesis and analyzed the source and suppression methods of frequency noise.
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