大数据环境下卫星对地观测数据集成系统的关键技术

Key Technologies of Earth Observation Satellite Data Integration System under Big Data Environment

建立卫星对地观测数据集成系统是遥感卫星数据信息资源有效管理与应用的重要手段。从我国对地观测重大需求以及前沿科学问题入手,提出大数据环境下卫星对地观测数据集成系统建立中亟待解决的关键技术,包括大容量异构对地观测数据集成的语义技术、基于网格的遥感图像快速处理技术、遥感大数据深度分析技术、多数据中心协同处理及云平台技术,为实现集成卫星图像、地面观测数据和模拟模型的元数据管理、几何精度纠正和卫星数据质量评价、海量卫星图像数据的空间分析与知识发现、分布式高性能卫星图像数据管理和归档等基本功能,为解决海量卫星数据分布式存储与计算、数据集成与互操作、空间数据分析与地学知识发现提供新思路、新技术与新方法。

The establishment of satellite earth observation system is an important means for effective manage- ment and application of satellite information resources. From significant demands for earth observation in China as well as cutting-edge scientific issues, we propose some key technologies of developing earth observation satellite da- ta integration system under big data environment, including semantic integration of large heterogeneous earth obser- vation data, fast data processing of satellite remote sensing imagery based on grid, in-depth analysis and knowledge discovery of big satellite data, and collaboration processing of multiple data centers and cloud-platform. It is hoped to provide with new technologies and methods for satellite big data management, analysis and archiving.