合成孔径雷达抗干扰技术综述

Review of Synthetic Aperture Radar Interference Suppression

合成孔径雷达(SAR)得益于其全天时全天候、高分辨率的工作模式,在最近几十年吸引了全球雷达学者的目光。作为一种有源雷达系统,合成孔径雷达高分辨成像过程中会受多样式复杂多变的强电磁干扰影响,从而严重影响合成孔径雷达最终的高分辨成像结果,因此,如何有效对抗复杂电磁干扰是合成孔径雷达探测感知的难点和重点之一。该文针对不同的干扰样式、干扰来源、干扰散射机理、雷达天线配置、目标特性等合成孔径雷达抗干扰及高分辨成像的关键要素和主要思路进行了总结梳理,并依照干扰对抗算法的本质,对近些年代表性的合成孔径雷达对抗压制干扰和欺骗干扰算法的文献进行介绍和归纳,旨在为以后的研究提供一定的参考。

Synthetic Aperture Radar(SAR)has attracted much attention in the recent decades owing to its allweather and high-resolution working mode.As an active radar system,the high-resolution imaging process of SAR systems is affected by different types of strong,complex,and variable electromagnetic interferences that can severely affect the final high-resolution SAR imaging results.Thus,developing ways to effectively suppress complex electromagnetic interferences is a major challenge and focus of SAR detection.In this paper,we summarize the key elements and main concepts underlying interference suppression in high-resolution SAR imaging,including different interference patterns,interference sources,interference scattering mechanisms,radar antenna configurations,and target characteristics.We then consider the essential task of interference suppression algorithms.Recent papers that detail the representative SAR algorithms used to mitigate suppressed and deceptive jamming are introduced and summarized to provide references for future research.