X波段全极化SAR/InSAR地物散射特性分析与数据处理技术

项目名称： X波段全极化SAR/InSAR地物散射特性分析与数据处理技术

项目编号： No.61471276

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 李真芳

作者单位： 西安电子科技大学

项目金额： 80万元

中文摘要： 目前，国内外利用全极化SAR/InSAR数据在地物分类、植被参数提取等方面开展了广泛的研究，但大部分研究工作针对穿透性较好的L、C等频段，有关X波段的研究较少。虽然X波段穿透性相对较差，其在高植被密集覆盖区的应用具有一定的局限性，但其波长较短，其极化信息能更有效地反映地物的形状、指向及介电常数等参数。此外，X波段SAR系统可实现更高的空间分辨率，能对地物进行更精细的描述。因此，X波段全极化SAR/InSAR在地物全极化散射特性、数据处理等方面与L、C等波段有所不同，且其在低矮植被覆盖区参数反演、地物分类等方面具有独到的优势。由于国内外针对X波段全极化SAR/InSAR在地物散射特性、地物分类、低矮植被区域地物参数估计等方面尚未开展有效的研究，本项目将利用课题组研制的国内外首部车载X波段全极化多基线InSAR系统对上述技术进行研究。

中文关键词： 极化干涉；极化干涉处理；目标极化特性分析；X波段

英文摘要： At present, fully polarimetric SAR/InSAR image classification and vegetation parameter extraction etc. have been widely studied in the world. Most works, however, are based on L-band and C-band etc. which have fine penetrability. The research based on X-band is little. Although the application in high and dense forest areas is limited by its penetrability, the polarimetric information of X-band can indicate the parameters more effectively, such as shape, direction and dielectric constant etc. owing to its short wavelength. Moreover, X-band SAR system can achieve a higher resolution and give a more detailed description of the scene. X-band fully polarimetric SAR/InSAR,therefore,are different from that of L-band and C-band etc. in polarimetric scattering characteristic and data processing etc. Furthermore，they have a great advantage in parameter estimation and classification. However, the scattering characteristic, terrain classification and parameter estimation of low vegetated areas based on X-band fully polarimetric SAR/InSAR have not been investigated efficiently at home and abroad, the vehicle-based X-band fully polarimetric multi-baseline InSAR system，which is the first one in the world, will be utilized for the research.

英文关键词： PolInSAR;PolInSAR Processing;Polarimetric Characteristic of Target;X-band