不同校正方法对天线增益影响的研究  

Research on Influence of Different Correction Methods on Antenna Gain

作　　者：张学森[1,2] 叶彦 ZHANG Xuesen;YE Yan(No.38 Research Institute of CETC,Hefei 230088;Anhui Key Laboratory of Aperture Array and Space Application,Hefei 230088)

机构地区：[1]中国电子科技集团公司第三十八研究所,合肥230088 [2]孔径阵列与空间探测安徽省重点实验室,合肥230088

出　　处：《火控雷达技术》2019年第4期38-40,45,共4页Fire Control Radar Technology

摘　　要：数字阵列天线系统是对分布在不同空间位置的阵列天线采样量化后进行数字波束形成,在工程实践中由于诸如功放、混频器、滤波器和A/D变换器等模拟器件不可避免存在幅相差异,导致通道之间特性的不一致。所以数字波束形成之前必须完成通道一致性的校正工作。本文主要介绍了阵列信号处理的原理,理论推导了两种不同的校正准则造成的信噪比差异,并以实际数据验证了其对阵列天线系统的影响。A digital array antenna system samples and quantifies array antennas distributed in different spatial positions and performs digital beam forming.In engineering practice,the characteristics of antenna channels are different because of the inevitable amplitude and phase differences between different analog components,such as power amplifier,mixer,filter,and A/D converter.Therefore,channel conformity correction is necessary before carrying out digital beam forming.This paper describes the principle of array signal processing,analyzes the SNR difference caused by two different correction methods theoretically,and verifies influence of different correction methods on array antenna systems with test data.

关 键 词：阵列信号处理 数字波束形成 天线增益 

分 类 号：TN958[电子电信—信号与信息处理]