文中详细介绍数字合成电路的组成与工作原理。
The composition and principle of digital synthesis circuit are introduced in detail.
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.
介绍数字合成技术在三相精密功率信号源中成功地应用。
This paper introduces the successful application of digital synthesis technique to three phase precision power signal source.
介绍了该成像仪器的数字合成聚焦技术、井眼环境校正技术和测井试验等。
Introduced are the tool's synthetic digital signal processing technology, borehole environment correction and log experiments, etc.
本文首先介绍了DDS的基本原理。然后提出用双dds结构实现调频信号数字合成的方法。
This paper first presents the fundamentals of DDS, and then gives a method of accomplishing digital synthesis of FM signals by means of dual DDS structures.
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.
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.
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.
文章介绍了直接数字频率合成器(DDS)的基本工作原理，同时对其杂散进行了分析。
The paper introduced the working principle of the direct digital frequency synthesizer (DDS) and its spurious analysis is performed.
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.
介绍了一种宽带数字式频率合成环路的设计思想，给出了原理电路。
This paper introduces the design thought of a wide band digital frequency synthesis loop. The principle circuit is given.
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.
介绍利用复杂可编程逻辑器件CPLD和直接数字合成专用电路dds，设计雷达信号回波模拟器的硬件系统。
Introduce how to design hardware system structure of radar signal echo simulator by using CPLD and DDS.
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.
本文首先简单介绍了合成孔径雷达（SAR）成像原理，并对以超高速数字信号处理器（DS）为核心的机载合成孔径雷达实时成像处理系统的硬件结构作了描述。
This paper presents the principle of Sythetic Aperture Radar(SAR) imaging and describes the system hardware of airborneSAR real-time digital signal processing system with ultra-high speed DSP .
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.
介绍了一种利用LPC对数倒频谱包络偏离量和人工合成语音信号对数字语音质量进行客观评价的方法；
This paper introduces an objective way to evaluate the quality of digital voice by means of LPC logarithmic inverted spectrum-envelope offset and artificial composite voice signal;
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.
介绍了数字直接合成器 （DDS）、数字下变频器 （DDC）、数字滤波器等数字无线电经常用到的概念 。
We also introduced some concept of digital radio, including digital direction synthesizer (DDS) and digital down conversion (DDC) and digital filter.
文中分析了雷达与外部电磁环境之间的双向兼容性问题，并对所采取的窄带接收机、数字直接合成（DDS）频率源和副瓣对消技术作了介绍。
We analyze bi-directional compatibility between radar and outside electromagnetism circumstance and also bring a detailed introduction to narrowband receiver, DDS(Digital Direct Syn…
在第二章中，主要介绍直接数字频率合成器（DDS）的工作原理，对DDS的系统结构，工作原理，技术指标，频谱特性，优缺点进行了阐述。
Then the work theory, system structure, technology index, spectrum characteristic, merits and defects of Direct Digital Synthesis (DDS) are introduced mostly in the second chapter.
介绍了高速中规模集成数字频率合成器、晶体管高频大功率放大器的设计。
The high-speed digital frequency mixer made of medium-scale integrated circuits and the design of a high power transistor amplifier are also presented.
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.
介绍了直接数字频率合成技术以及分析其杂散误差，对相位截断误差和幅度量化误差进行了傅立叶级数分析研究。
The spectrum characteristics of the phase truncation error and amplitude quantization error are analyzed by the method of Fourier series.
本文介绍一个微机可控直接数字频率合成器（DDFS）的实验样机。
The paper discusses a prototype of direct digital frequency synthesizer(DDFS) controlled by microcomputer.
首先简要介绍DDS的工作原理及其性能，然后阐述如何利用AD985 1芯片设计一个高精度直接数字式合成频率源。
This paper briefly introduces the basic principles and the performance of DDS. Then it mainly describes how to use AD9851 chip to design a direct digital synthesis frequency source with high accuracy.
本文介绍了一种应用CORDIC算法的线性调频直接数字合成(DDS)的实现方法。
A new method LFM in direct digital frequency synthesizing (DDS) based on CORDIC algorithm is introduced in this paper.
介绍了直接数字频率合成器的基本组成及设计原理，并对各组成部分进行了理论分析，给出了基于FPGA的具体设计方 案及实现方法。
The structure and principles of Direct Digital Frequency Synthesizer is introduced, and each constituent is theoretically analyzed, and also a detailed design based on FPGA is given.
重点介绍了数字化音频信息、数字音频文件、音乐合成技术及乐器数字接口MIDI。
Digitized audiofrequency information, digitized audiofrequency file, music composite technology, MIDI, etc., are emphatically introduced.
针对一个汽车音响收音数字调谐系统的实例，介绍了一种广播用双波段锁相环频率合成芯片的设计方法。
The phase locked loop (PLL) frequency synthesizer for digital tuning system(DTS), which is used in DTS of car radio receiver, is presented.
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