多相滤波结构的信道化接收机设计  

Design for Channelized Receiver of Polyphase Filtering

作　　者：唐济远[1] 刘渝[1] 袁春姗[1] 

机构地区：[1]南京航空航天大学电子信息工程学院,江苏南京210016

出　　处：《军事通信技术》2012年第3期57-62,共6页Journal of Military Communications Technology

摘　　要：根据现代电子侦察接收机所侦收信号的具体要求,文章讨论了信道化数字接收的可行性方案。探讨了信道划分的具体方式以及合理的信道化设计方案,研究了多相滤波结构的信道化模型及后续的信号检测方法,最终在单片FPGA上,设计实现了多相滤波结构的信道化接收机。在一定信噪比(SNR)的条件下,利用该结构的信道化接收机可以处理多路同时到达信号,并及时获得脉冲描述字(PDW)。该系统结构简单,便于硬件实现,测量速度快、精度高。满足对脉冲信号参数测量高精度、实时性的要求。According to the specific requirements of the modern electronic reconnaissance re- ceiver, the feasibility for the channelized digital receiver was studied. Firstly, the specific meth- ods of dividing the channels and the available design of the channelized reciver were discussed. Secondly, the channel model based on ployphase filter structure and the related signal detection methods were investigated. Finally, on a single chip of FPGA, the Channelized Digital Receiver based on ployphase filter bank was designed and implemented. Under given Signal to Noise Ratio （SNR）, this design can deal with real-time signals from multi paths at the same time and obtain the Pulse Description Words （PDW） immediately. This system is characteristic of high speed and high accuracy, and is simple to implement.

关 键 词：信道化接收机 多相滤波 信号检测 现场可编程门阵列 

分 类 号：TN971[电子电信—信号与信息处理]