卫星数字信道化器干扰条件下性能研究  

Research on performance of satellite digital channelizer under jamming condition

作　　者：韩超[1] 陆锐敏 刘欣[1] 

机构地区：[1]解放军理工大学通信工程学院,江苏南京210007 [2]南京电讯技术研究所,江苏南京210007

出　　处：《现代电子技术》2012年第13期25-28,共4页Modern Electronics Technique

摘　　要：为了研究干扰条件下卫星数字信道化器的抗干扰性能,采用多相/DFT信道化方法,构建系统模型,分析得到模/数转换器的溢出效应是影响信道化器性能的原因,然后在干扰与用户信号频域不重叠的条件下对信道化器的抗干扰性能进行研究,并在各种不同干扰条件下进行仿真分析。To study the anti-interference performance of satellite digital channelizers under jamming condition,the polyphase/DFT channelizing method is adopted to construct a system model.The analytical results show that spillover effect of analog-to-digital converter is the main factor to affect the performance of satellite digital channelizer.And then antijamming characteristics of the channelizer are studied under the condition that jamming and signal are not overlapped in frequency domain.A simulation analysis was made under different conditions.

关 键 词：数字信道化器 多相/DFT信道化方法 模数转换器 溢出效应 

分 类 号：TN974[电子电信—信号与信息处理]