一种基于幅相误差补偿的盲通道均衡方法  

Blind Channel Equalization Method Based on Amplitude and Phase Error Compensation

作　　者：王晓峰[1] 张美君[1] 王涛[1] 郑昱[1] 

机构地区：[1]南京电子技术研究所,南京210039

出　　处：《信息化研究》2017年第3期20-23,28,共5页INFORMATIZATION RESEARCH

摘　　要：由于系统误差的存在,要获得高的GMTI性能,降低系统要求,通道均衡必不可少。实际系统中,完全一致的二通道是不存在的,各通道间存在不同的幅相特性,若引入的误差足够大,就会破坏信号间的相关性,影响动目标检测。通道均衡是提高二通道数据的相似性,使得各通道具备近似相同的幅相特性,使各通道信号达到匹配,对相同的场景不同的通道表现出稳定的时空相关性。文章简要介绍目前在合成孔经雷达/地面动目标指示(SAR/GMTI)中通道均衡的几种方法,并且提出二维自适应通道盲通道均衡方法。该方法能够使幅度特性和相位特性在最小二乘准则下准确匹配。Due to the existence of system error, to obtain high GMTI performance and reduce system requirements, channel equalization is essential. In the actual system, the two channel is not consistent, and there are different amplitude and phase characteristics in each channel. If the error is large enough, the correlation between the signals will be destroyed, which will affect the detection of moving targets. Channel equalization is to improve the similarity of the two channel data, so that each channel has approximately the same amplitude and phase characteristics, so that each channel signal to match different channel on the same scene showed a temporal correlation stable, this paper briefly introduces the current channel in SAR/GMTI equilibrium methods, and put forward the adaptive channel blind channel equalization method, this method can make the amplitude and phase characteristics of accurate matching in the least squares.

关 键 词：合成孔径雷达/地面动目标指示 盲通道均衡 最小二乘准则 

分 类 号：TN951[电子电信—信号与信息处理]