用于探地雷达的DDS步进频率设计  

Design of DDS Stepped-frequency Used in Ground Penetrating Radar

作　　者：曹文剑[1] 陆珉[1] 徐建国[1] 

机构地区：[1]国防科技大学电子科学与工程学院,长沙410073

出　　处：《现代雷达》2008年第6期98-101,共4页Modern Radar

摘　　要：基于直接数字频率合成(DDS)技术在带宽、频率转换速率、调频线性度、频率分辨率和稳定度等方面的优异性能,采用直接数字频率合成芯片AD9959设计4路独立的步进频率源,结合3V低功耗接收机中频子系统AD607芯片设计超外差式接收机,实现了用于探地雷达的一种DDS步进频率设计,方案简单易行,性能高效稳定。Taking the advantage of superior performance of direct digital synthesis(DDS)in bandwidth,speed of frequency change,linearity of FM and so on,a Stepped-Frequency source having four independent channels generted by direct digital syn- thesis (DDS)chip AD9959 is designed.Combined with 3 V low power receiver IF subsystem chip AD607,a superheterodyne re- ceiver is designed.This design of SFCW based on DDS used on Stepped-frequency ground penetrating radar could be easily done and the performance is stable and h...

关 键 词：AD9959芯片 步进频率 探地雷达 

分 类 号：TN959[电子电信—信号与信息处理]