雷达前视成像技术的研究现状

Research Status of Radar Forward-Looking Imaging Technology

为弥补由于雷达前视方向没有足够的多普勒带宽而难以利用合成孔径雷达(SAR)成像技术的问题,雷达前视成像技术得到了多角度且深入的研究,并在导弹精确打击、地形识别、目标定位以及飞机自主着陆等方面投入了应用。全面介绍了前视成像技术的研究历程,根据成像原理、雷达模型、探测信号的不同对该技术做了系统分类,主要阐述了基于卷积反演的成像技术、单脉冲成像技术、微波关联技术、阵列雷达成像和双基前视成像的基本原理和特点,并总结了各种前视成像技术的研究现状及发展趋势。

To solve the problem that the forward direction of radar does not have enough Doppler bandwidththus it is difficult to use the Synthetic Aperture Radar( SAR) imaging technology,deep researches have been carried out on the radar forward imaging technology from multiple aspects,and have been applied in missile precision strike,terrain recognition,target positioning and aircraft autonomous landing. This paper comprehensively introduces the history of the researches on forward-looking imaging technology,and make classification to the technology systematically according to imaging principle,radar model and detection signals. The basic principles and characteristics of the imaging technology based on convolution inversionsingle pulse imaging technology,microwave correlation technology,array radar imaging and bistatic forwardlooking imaging are mainly described. The research status and development trend of various forward-looking imaging technologies are summarized.