空间分布式SAR高精度干涉成像基础理论与关键技术

项目名称： 空间分布式SAR高精度干涉成像基础理论与关键技术

项目编号： No.91438202

项目类型： 重大研究计划

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： 曹喜滨

作者单位： 哈尔滨工业大学

项目金额： 380万元

中文摘要： 作为航天器系统在对地观测领域的一种创新应用，空间分布式SAR高精度干涉成像系统是分布式航天器系统技术和SAR干涉技术的完美结合。项目紧密围绕高分辨率对地观测国家重大专项发展需求，剖析空间分布式SAR多体制/多维干涉原理；通过解决空间分布式SAR高精度干涉成像发展过程中面临的空/时/频/极化多维干涉SAR高精度复相关矩阵估计、多体制干涉成像质量影响因素传递机理、面向基线稳定和安全运行的队形优化与控制以及基于多源数据融合的高精度基线确定等关键问题，提出高精度干涉成像对卫星编队队形控制与测量的精度要求以及对航天器定轨/定姿/平台稳定性和相位测量误差与控制精度要求。在此基础上以任务需求驱动为导向，将相关理论与工程应用相结合以解决工程应用中所面临的关键问题并进行相应的地面仿真验证。研究成果将为高分专项中空间信息的快速获取和处理提供理论支持，进而推进空间信息网络理论与空间信息科学的快速发展。

中文关键词： 分布式SAR；干涉成像；误差传递；时空基准；构形与控制

英文摘要： As an innovative application of spacecraft system in the field of earth observation, the space high-precision SAR interferometric system is a perfect combination distributed spacecraft system and multi-dimensional SAR interference technology. Aimed at the national development needs of high resolution in earth observation, multi-mechanism/multi-dimensional principle of distributed SAR system is analyzed. And several key technology problems have been solved, such as definite quality factors transfer ways of multi-system interference imaging, formation optimization and control faced baseline stability and safety operation, high precision baseline determination based on multi-source data fusion, high precision complex correlation matrix estimation of space-time-frequency-polarization multi-dimensional interference SAR and so on. Also, the project indicates the precision requirement for configuration control and measurement, orbit and attitude determination, individual satellite attitude stability, and phase measurement and control. Then, oriented task demand, we would combine the relevant theory with engineering practice to solve the core critical issues in engineering applications. These results will also offer theoretical support for acquirement and processing of spatial information, furthermore, it would promote the rapid development of network-oriented theory and spatial information science.

英文关键词： Distributed SAR;interferometric image;error transfer;time and space reference;configuration and control