摘要
简单介绍直接数字频率合成(DDS)技术和Simulink仿真系统的特点及背景,阐述DDS的基本工作原理并对它的调制机理进行了分析;在Simulink环境下建立了DDS的LFM信号的动态仿真模型,分析DDS动态仿真LFM模型中各模块的功能和来源;对所建系统进行了仿真实验,在实验的基础上分析仿真结果,为研究和设计直接数字频率合成系统提供理论和实验基础。
This paper introduces the direct digital frequency synthesis （DDS） technique and characteris- tics and background of Simulink Simulation system, explains the basic working-principle of DDS and analyzes its modulating principle. The dynamic simulation model of linear frequency modulation （LFM） signal based on DDS is established in the Simulink environment, and the function and source of each module in DDS dynamic simulation LFM modeare analyzed;the simulation and experiment of the established system is made, and the simulated result is analyzed on basis of the experiment, which lays theoretical and eriapirical foundation for studying and designing DDS system.
出处
《火控雷达技术》
2008年第4期50-52,58,共4页
Fire Control Radar Technology
