基于目标特性增强的频带缺失雷达信号融合处理  

Multi-radar signals fusion imaging with frequency-band omissions based on target feature enhancement

作　　者：叶钒[1] 何峰[1] 朱炬波[2] 张永胜[1] 

机构地区：[1]国防科学技术大学电子科学与工程学院,湖南长沙410073 [2]国防科学技术大学理学院,湖南长沙410073

出　　处：《系统工程与电子技术》2011年第10期2226-2229,2281,共5页Systems Engineering and Electronics

摘　　要：由于战场电磁环境复杂,使得在某些频段上雷达信号受到了干扰而无法用于成像。如果仅利用单部雷达在可用频段上的回波信号进行成像,则图像的分辨率无法满足实际需求。为了综合利用多部频带缺失雷达的信号,将频带缺失的多雷达信号融合问题转化为一个信号表示问题。为了增强目标特性,将合成孔径雷达(synthetic aperture radar,SAR)图像增强技术引入到多雷达信号融合处理中,用正则化方法来增强目标的点特性和边缘特性。此融合处理方法不仅适用于多部频带缺失雷达的信号融合,而且无需极坐标插值来完成相位解耦,更能增强目标特性。仿真实验验证了本文方法有效性。Because of the complicated electromagnetism environment of battlefield, radar signals in some frequency-bands cannot be used for imaging due to interference. If the echo signal of a single radar in available bands is used for imaging, the image resolution may not satisfy practical requirements. To synthetically utilize nmlti-radar signals, the problem of multi-radar signals fusion with frequency-band omissions is transformed into a signal representation problem. On the other hand, the synthetic aperture radar （SAR） image enhanced technology is introduced into multi radar signal fusion processing to enhance target features. The regularization is used to enhance point and edge features. This fusion processing is an application to multi-radar signals fusion with frequency band omissions. While it dispenses polar coordinate interpolation, it can enhance target features. The experimental results show the validity of the proposed method.

关 键 词：多雷达信号融合成像 频带缺失 信号表示 目标特性增强 正则化 

分 类 号：TN957[电子电信—信号与信息处理]