基于数字信号处理器技术的直接数字合成快速跳频通信信号源  

The Design of Signal Source of Fast Hopping-frequency Communication Based on DDS & DSP

作　　者：周芸[1] 路青起[1] 

机构地区：[1]西安工业大学电信学院,陕西西安710032

出　　处：《探测与控制学报》2007年第5期77-80,共4页Journal of Detection & Control

摘　　要：直接数字频率合成(DDS)具有分辨率高、转换速度快的优点。在雷达及通信系统的跳频信号源设计中,DDS技术具有其它频率合成方法无法比拟的优势。利用数字信号处理器DSP控制DDS芯片来实现快速跳频通信信号源具有简单方便及低成本的特点,可以直接产生200 MHz以下的跳频信号。文中介绍了DDS芯片AD9951的结构、特点及采用DSP如何控制AD9951来实现跳频信号源的方法。DDS has the merit of high resolution and quick conversion rate. In the design of frequency-hopping supply oscillator of radar and communication system, the DDS technology has the superiority that other frequency synthetic methods is not to be compared with it. Using DSP chip for controlling DDS chip and realizing fast hopping-frequency is characterized by simple, convenient and low cost and can generate hopping-frequency signal under 200MHz. This paper introduces the structure and characteristics of DDS chip AD9951 as well as how to use DSP for controlling chip AD9951 to realize frequency-hopplng supply oscillator.

关 键 词：DDS DSP 跳频通信 SPI FTW 

分 类 号：TN911.72[电子电信—通信与信息系统]