摘要
直接数字频率合成是一种新兴的电子技术，已广泛应用于雷达、通信等领域中。由于应用在惯性技术中的声光移频器对其控制电路提出了很高的要求，传统的技术难以实现。因此，文章介绍了一种以技术为核心的新型控制方法，它将声光移频器的要求与先进的数字技术结合起来，大大提高了控制系统的精度。
A new technique of Direct Digital Synthesis (DDS)has been widely used in the areas of radar,telecommunication and synthesizers in recent years.In the acoustooptic frequency shifter,which is used in the inertial guidance,the control system must have very high resolution in its frequency control.It is difficult for the traditional frequency synthesizer to do this job.This paper presents a new control method in which the key part uses DDS technique.This method successfully meets the requirement of the acoustooptic frequency shifter with the advanced digital technology and greatly improves the precision of the system.
出处
《压电与声光》
CSCD
北大核心
1999年第5期337-340,348,共5页
Piezoelectrics & Acoustooptics
基金
国防科工委预研重点资助项目
关键词
数字频率合成
声光移频器
DDS
应用
Direct Digital Synthesis(DDS)
acoustooptic frequency shifter
phase noise
SAW
