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- 介绍了直接数字频率合成 (DDS)技术的工作原理及特点,给出了基于DDS设计的自动频率控制(AFC)系统的设计,形成一种能提供稳定频率的具有宽频带跟踪范围的AFC系统,并对其进行了性能分析。The paper introduces the theory and char ac teristics of the direct digital synthesis (DDS) technology. An auto-frequency- control (AFC) system based on DDS is proposed,which can supply steady frequency with wide bandwidth of tracking range. Its performances are also analyzed.
- 基于DDS的AFC系统的设计Design of an AFC System Based on DDS
- 基于DDS的高性能信号源的设计The Design of High Performance Signal Source Based on DDS
- 一种新颖的基于低通控制特性的AFC系统A Novel AFC System Based on Low-Pass Filter
- 年代从某一具体日期算起的一段时间,也用作其年代系统的根据A period of time as reckoned from a specific date serving as the basis of its chronological system.
- 基于DDS的阶梯波合成FPGA控制多电平逆变的设计实现FPGA-Implemented Design of Step Modulation Control for Multilevel Converter Based on Direct Digital Frequency Synthesis(DDS)
- 一种用于气象雷达的AFC系统AFC System for Weather Radar
- 基于DDS的固定频率正弦信号发生器的改进Improvement of Fixed Frequency Sine Signal Generator by DDS
- 本文中简要分析锁相型自动频率控制系统的基本原理及其在实际应用当中遇到的问题,进而提出了一种新型的基于反射波极小值的AFC系统,并对其原理进行了深入的剖析。Based on the analysis, a new AFC system based on self-optimizing control is proposed with the experience of experts. The paper generally analyses the basic principle of phased-locked discriminating automatic frequency control (AFC) system, and the problems faced in application.
- 基于DDS的雷达中频信号源设计与实现Design and Implementation of Radar Intermediate Frequency Signal Generator Based on DDS
- 深圳推行地铁AFC系统的经验教训Experience from the Application of AFC System in Shenzhen Metro
- 基于DDS的高分辨率信号发生器的实现Realization of Waveform Generator Based on DDS with High Resolving Capability
- 我国城市轨道交通AFC系统的现状及发展Present Situation and Development of AFC System in Urban Rail Transit in China
- 基于DSP与DDS的混沌信号源的设计与实现Design and implementation of a chaotic signal generator using DSP and DDS
- 浅析高矫顽力磁卡在上海地铁AFC系统的应用Application of high-coercivity cards in the AFC system of Shanghai metro
- 基于DDS的任意频谱信号重构与数字正交调制方法The Method of Reconstructing Optional Spectrum Signal and Digital Quadrature Modulation Based on DDS
- 基于多线程的VSAT卫星通信系统的网控中心的设计与实现Thread-Based Design and Implementation of an NCC in a VSAT Satellite Communications Systems
- 基于DDS的可调精度真空计Adjustable-precision Cavity Vacuum Gauge Based on DDS
- 基于DDS技术的数控信号源的设计Design of Digital Control Signal Source Based on DDS Technique
- 机构运动简图绘图系统的基于面向对象技术的图元类设计Graphic element category design based on object-oriented technique in a plottling system of mechanism's motion diagram