极化层析SAR人造目标三维重构与特征提取研究

项目名称： 极化层析SAR人造目标三维重构与特征提取研究

项目编号： No.61302143

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 无线电电子学、电信技术

项目作者： 代大海

作者单位： 中国人民解放军国防科学技术大学

项目金额： 26万元

中文摘要： 多维度成像是当前雷达成像领域的前沿热点课题，极化层析SAR是多维度成像领域的最新发展方向。它通过对多极化多基线数据的联合处理，实现高度方向上的多目标分辨能力，能够解决干涉SAR、极化干涉SAR不能适用于城市区域和人造目标（如车辆、建筑物、桥梁等）的三维成像难题。本项目立足于极化层析SAR 这一新兴体制，以典型人造目标的三维重构为目标，挖掘多基线、全极化等多维度优势，研究高适应性的多极化联合的目标三维成像重构与特征提取方法。首先研究稀疏基线设计与性能分析；进而，针对全极化测量的矢量性特点和层析成像的稀疏性特点，研究基于多通道压缩感知（MMV-CS）的极化层析SAR人造目标三维重构方法；在此基础上，充分利用高分辨、全极化和三维成像的优势，研究人造目标的空-频-极化等多维度特征提取技术，实现对人造目标的几何尺寸、结构、姿态指向等参数的反演。项目研究成果将有力推进我国极化层析SAR发展应用。

中文关键词： 合成孔径雷达；极化；层析；压缩感知；三维重建

英文摘要： Multi-dimensional imaging is an emerging technique in the radar imaging community. As a new trend of the technique, polarimetric tomographic SAR obtains the ability of discriminating multiple scatterers in the height direction by jointly processing multi-polarization and multi-baseline measurements, and is very promising in obtaining the 3D reconstructions of manmade objects (e.g., vehicles, buildings, bridges etc), which can not be achieved by classic InSAR or PolInSAR. Aimed to achieve the 3D reconstruction and feature extraction of typical manmade targets, this research is to investigate the joint imaging and feature extraction techniques, taking the advantages brought by full polarimetric and multi-baseline measurements. Firstly, we will investigate the sparse aperture design for polarimetric tomographic SAR imaging, and present the corresponding performance analysis results; secondly, based on multiple measurements vector compressive sensing（MMV-CS） model, joint polarimetric tomographic imaging techniques for manmade targets will be proposed; Thirdly, with the advantages brought by polarimetric tomographic SAR, feature extraction techniques for manmade targets in the space-frequency-polarization domain will be studied, aiming to produce the estimates for parameters of targets, such as geometrical size, stru

英文关键词： synthetic aperture radar；polarimetry；tomography；compressive sensing；3D reconstruction