吉首大学学报（自然科学版）2004，Vol.25Issue(1)：63-66,4.
基于数字频率合成技术的雷达数字接收机设计
The Key Design Technology of Radar Digital Receiver Based on DDS
高玉良 1王冰切 1朱元清2
作者信息
- 1. 空军雷达学院微波工程系,武汉,430010
- 2. 北京航空航天大学电子信息工程学院,北京,100083
- 折叠
摘要
Abstract
AFC(Automatic Frequency Control)is realized with technology of DDS (Direct Digital Synthesis)and hith accuracy frequency measurement,quadrature double channel receiver is made up of circuits of IF quadrature sampling directly coherent sampling clock realized with DDs. By doing so, the effect of all kinds of unstable factors such as frequency shift and the limits placed by analogy circuit is diminished effectively, even eliminated. Meanwhile, the performance of the receiver is imporved greatly, for example, the limits on I on an average. Additionally, some practical problems in realizing are discussed.关键词
数字频率合成技术/自动频率跟踪/相参时钟/中频正交采样Key words
DDS/AFC/Coherent clock/IF quadrature sampling分类
信息技术与安全科学引用本文复制引用
高玉良,王冰切,朱元清..基于数字频率合成技术的雷达数字接收机设计[J].吉首大学学报（自然科学版）,2004,25(1):63-66,4.
