一种多通道接收机幅相校正的实现方法  

An Implementation Method of Amplitude and Phase Correction for Multichannel Receiver

作　　者：徐后乐 XU Hou-le(Beijing Bitalltech Technology Co.,Ltd.,Beijing 100854,China)

机构地区：[1]理工全盛(北京)科技有限公司,北京100854

出　　处：《舰船电子对抗》2022年第5期60-63,72,共5页Shipboard Electronic Countermeasure

摘　　要：在无线电系统中,接收机通道幅度和相位的不平衡会对回波的多普勒频率产生镜像,从而导致信号处理后出现虚假目标,此外不平衡还会影响通道之间的相位差。对幅相不平衡的回波信号建立数学模型,并计算出数学模型中的参数,最终实现了多通道的幅相校正。该方法应用于多个无线电项目中,消除了接收机幅相不平衡带来的危害。In the radio system,the amplitude and phase imbalance of the receiver channel will mirror the Doppler frequency of the echo,which results in the false targets after signal processing.In addition,the imbalance will also affect the phase difference among the channels.This paper establishes a mathematical model for the echo signal with amplitude and phase imbalance,calculates the parameters in the mathematical model,and finally realizes the multi-channel amplitude and phase correction.This method has been applied to many radio projects,and the harm caused by the amplitude and phase imbalance of the receiver can be eliminated.

关 键 词：无线电 幅度和相位 不平衡 幅相校正 

分 类 号：TN957.51[电子电信—信号与信息处理]