基于数字信道化的信道检测与信号重建技术  

Channel Detection and Signal Reconstruction Techniques Based on Digital Channelization

作　　者：邓涛[1] 陈晔[1] 焦晓亮[1] 

机构地区：[1]北京华航无线电测量研究所,北京100013

出　　处：《舰船电子对抗》2011年第6期63-67,共5页Shipboard Electronic Countermeasure

摘　　要：针对宽带雷达信号信道化接收的失真问题,提出了一种信号重建方案。利用瞬时测频技术改进了跨信道信号的检测方法,根据子信道信号的瞬时频率分布来决定是否需要信号重建,分析了信道化与重建系统原型滤波器需要满足的条件,建立了系统的高效模型。仿真结果表明该系统能够准确恢复原信号的特征。Aiming at the distortion of wideband radar signal channelization reception,a signal reconstruction program is proposed.This paper improves the method of detecting across-channel signal by using the instantaneous frequency measurement technique,and determines weather the signal should be restored or not according to the instantaneous frequency distribution of sub-channel signals,analyzes the conditions for satisfying the channelization and reconstructing the system prototype filter,establishes the system model with high efficient.The simulation results indicate that the system can accurately restore the characteristics of original signal.

关 键 词：数字信道化 瞬时测频 信道检测与判决 信号重建 

分 类 号：TN957.5[电子电信—信号与信息处理]