全息合成孔径雷达的概念、体制和方法

Concept,System,and Method of Holographic Synthetic Aperture Radar

合成孔径雷达技术经历了二维SAR、二维半SAR(InSAR)、三维SAR,已发展到如今的多维度SAR,取得了巨大的技术成就。该文在简要总结合成孔径雷达及其成像技术发展历程的基础上,提出了全息合成孔径雷达的概念并首次给出了明确的定义,指出该定义与现有全息雷达、多基线圆迹SAR、多维度SAR等概念的区别与联系。并且基于现有多维度SAR模型框架,给出了全息SAR的成像体制和信号模型,提出了初步的成像思路,为全息SAR技术的发展提供了初步的理论和技术框架基础。

Over time,Synthetic Aperture Radar(SAR)imaging techniques have been developed from twodimensional SAR,two-and-a-half-dimensional SAR(InSAR),and three-dimensional SAR to multi-dimensional SAR.This has led to great technological achievements.This paper briefly summarizes the development of SAR and its imaging technology,presents the concept of holographic SAR and clearly defines it for the first time,and highlights the differences and connection between the holographic SAR definition and existing concepts such as holographic radar,circular tomographic SAR,and multi-dimensional SAR.On this basis,under the framework of the existing multi-dimensional SAR techniques,the imaging system and signal model of holographic SAR are established,and preliminary imaging ideas are proposed,which provides a preliminary theoretical and technical framework for the development of holographic SAR technology.