数字信道接收机中同时双信道选择与处理方法  

Simultaneous Dual Channel Selection and Processing in Digital Channel Receiver

作　　者：谢煜晨 陈威[1] 徐伟[1] 李辰梓 XIE Yuchen;CHEN Wei;XU Wei;LI Chenzi(Xi'an Electronic Engineering Research Institute, Xi'an 710100)

机构地区：[1]西安电子工程研究所,西安710100

出　　处：《火控雷达技术》2021年第2期57-61,共5页Fire Control Radar Technology

摘　　要：为了兼顾微弱信号截获能力与运算量限制,数字信道化接收机通常依次进行信道化、信道选择与参数测量等处理。考虑到处理的并行流水运算量大,一般选用FPGA来实现上述处理。传统的信道选择处理方式存在着信道模糊、跨信道等问题,为后续的信息处理带来较大的压力。针对这一问题,本文提出了一种基于幅度极大原则的同时双信道选择与处理方法,从数字信道化的信道中选择出最有可能存在信号的两个信道,适用于同时多信号的侦察,对信道模糊、宽带信号跨信道等问题进行了有效处理,从而提高数字信道接收机的复杂信号环境适应能力。In order to meet both the ability of weak signal interception and the limit volume of computation,the digital channelized receiver usually performs channelization,channel selection and parameter measurement in sequence.Considering the large amount of parallel pipeline processing,FPGA is generally used to achieve the above requirement.Traditional multi-channel selection methods has issues like channel ambiguity and wideband signal cross-channel,which brings abundant pressure to the following digital operations.In this paper,a method of simultaneous dual channel selection was proposed,based on the principle of maximum amplitude.The proposed method selected two channels with the highest possibility carrying signals from all 64 digital channelized channels.The method was suitable for the multiple signals reconnaissance at the same time.Due to effectively solving problems of channel ambiguity and wideband signal cross-channel,the proposed method improved the subsequent processing ability of digital channelized reception and the adaptability under complex signal environment for the receiver.

关 键 词：数字信道接收机 信道选择 信道模糊 跨信道 

分 类 号：TN95[电子电信—信号与信息处理] TN974[电子电信—信息与通信工程]