一种高效多级信道化数字接收机的设计与实现  

Design and implementation of a high-efficiency multistage channelized digital receiver

作　　者：聂慧锋 翟羽佳[1] NIE Hui-feng;ZHAI Yu-jia(No.723 Research Institute of CSIC,Yangzhou 225001,China)

机构地区：[1]中国船舶重工集团公司第七二三研究所,江苏扬州225001

出　　处：《雷达与对抗》2018年第3期47-52,共6页Radar & ECM

摘　　要：在电子战中,侦察接收机通常接收到的都是非合作信号,因此要求侦察接收机应具有带宽宽、灵敏度高、分辨率高、大动态范围和处理同时到达的多个信号的能力。侦察接收机输入带宽较宽时采用单级数字信道化处理,有着多相滤波器阶数高、FPGA资源消耗大的缺点。提出了一种高效多级信道化处理方法,对单级多相滤波进行了改进。通过对信道的二次划分处理,保证了侦察接收机的频率分辨率,实现时降低了算法的复杂度。仿真结果验证了该方法的有效性。In the electronic warfare, the reconnaissance receiver usually receives non-cooperativesignals. Therefore, the reconnaissance receiver should have wide bandwidth, high sensitivity, highresolution, large dynamic range and the ability to perform multi-signal processing simultaneously.The single-stage digital channelization is adopted when the input bandwidth of the reconnaissance receiver is wide, which has the disadvantages of high order of polyphase filter and large consumptionof the FPGA resources. A high-efficiency multistage channelized processing method is proposed,which improves the single-stage polyphase filter, guarantees the frequency resolution of the recon-naissance receiver and reduces the complexity of the algorithm, through the secondary division processing of the channels. This method is verified to be effective via the simulation results.

关 键 词：多级信道化 宽带数字信道化 信道检测 多相滤波 

分 类 号：TN971[电子电信—信号与信息处理]