微波视觉三维SAR关键技术及实验系统初步进展

Key Technology and Preliminary Progress of Microwave Vision 3D SAR Experimental System

合成孔径雷达(SAR)三维成像在复杂地形测绘、复杂环境下目标发现与识别等方面具有重要应用潜力,是当前SAR领域的重要发展方向之一。为推动SAR三维成像技术的发展和应用,中国科学院空天信息创新研究院牵头设计并研制了一套无人机载微波视觉三维SAR实验系统(MV3DSAR),为相关技术研究和验证提供实验平台。目前该系统的单极化版本已研制完成,并在天津开展了首次校飞实验。该文介绍了该系统的基本构成、主要性能以及系统和数据处理的关键技术,给出了首次校飞实验的实施情况以及初步的数据处理结果,验证了系统的基本性能指标和三维成像能力。该系统为后续SAR三维成像数据集构建和处理方法研究提供了良好的实验验证平台。

Three-Dimensional(3D)Synthetic Aperture Radar(SAR)imaging has considerable application potential in steep-terrain mapping and target recognition in complex environments and is an important development direction in the current SAR field.To promote the development and application of the 3D SAR imaging technology,the Aerospace Information Research Institute,Chinese Academy of Sciences designed and developed an unmanned aerial vehicle-borne Microwave-Vision 3D SAR(MV3DSAR)experimental system,which provides an experimental platform for the research and verification of related technologies.Currently,the single-polarization version of the system has been developed,and the first flight experiment has been conducted in Tianjin.This study introduces the structure,performance,key technologies,and data processing of the system.This study also presents the implementation and preliminary data processing results of the first experiment,verifying the basic performance and 3D imaging capability of the system.The MV3DSAR provides a good experimental and verification platform for analyzing 3D SAR imaging algorithms and constructing 3D SAR imaging datasets.