摘要
为解决传统Costas环在多路载波提取中占用资源量大以及在数字下变频中消耗现场可编程门阵列资源过多的问题,提出一种采用逻辑控制模块代替直接数字合成器模块的方法,设计并实现数字Costas环路。该方法适用于阵列雷达信号等多路载波信号处理,能够实现环路载波的快速提取,节约25%的硬件资源。
A new kind of Costas loop is designed with logistic modules instead of the primary Direct Digital Synthesizer(DDS) module in order to save logical resource in multi-carriers extraction and Direct Digital Control(DDC).The result of design shows that the proposed way is satisfactory for practical application and logical resource is saved by 25%.This new proposal is valuable to extraction of multi-carriers,especially in radar array signal processing.
出处
《计算机工程》
CAS
CSCD
北大核心
2011年第17期230-232,共3页
Computer Engineering
基金
重庆市院士基金资助项目"多目标精密跟踪技术"(CSTC2008BC2001)
重庆大学"211工程"三期创新人才培养计划基金资助项目(S-09102)
关键词
COSTAS环
鉴相器
载波同步
锁相环
滤波器
Costas loop
phase detector
carrier synchronization
phase locked loop
filter