基于多相滤波的通用数字信道化技术  

General Digital Channelization Technology Based on Polyphase Filter

作　　者：韩学涛 梁富 孙洪波 王超 何彩霞 HAN Xuetao;LIANG Fu;SUN Hongbo;WANG Chao;HE Caixia(Science and Technology on Electronic Information Control Laboratory,Chengdu 610036,China)

机构地区：[1]电子信息控制重点实验室

出　　处：《现代雷达》2018年第10期62-66,共5页Modern Radar

摘　　要：传统的信道化技术一旦信道带宽确定后,滤波计算时分解的相数和信道化后的时域分辨率也相应确定,耦合性较强,导致信道化技术在实际工程使用时灵活性存在一定的不足。文中首先给出了基于多相滤波的实信号数字信道化数学模型;然后,在此基础上推导了通用数字信道化数学表达式;最后,通过仿真验证了通用数字信道化技术的正确性。文中提出的通用数字信道化技术有效实现了信道带宽与多相滤波相数、信道化后时域分辨率的解耦,增加了系统设计和信道化技术应用的便捷性。Once the channel bandwidth is determined by traditional channelization,the polyphase number of the filter decomposition and the time domain resolution after the channelization are also determined,and the coupling is strong,which leads to the lack of flexibility in the use of channelization technology in practical engineering.Firstly,a mathematical model of real signal digital channelization based on polyphase filter is presented. Then,a general digital channelized mathematical formula is derived. Finally,the correctness of the general digital channelization technology is verified by simulation. The general digital channelization technology proposed in this paper can effectively decouple channel bandwidth and polyphase number of filter,and the time domain resolution after channelization.It increases the convenience of the system design and the application of channelization technology.

关 键 词：多相滤波 通用数字信道化 快速傅里叶变换 时域分辨率 

分 类 号：TN974[电子电信—信号与信息处理]