天宫二号应用任务地面数据处理与服务系统

Tiangong-2 application mission ground data processing and service system

面向天宫二号应用任务各类不同机理的先进科学实验类载荷和对地观测载荷的数据处理、存档管理、质量分析、运营服务和数据应用研究等方面的需求,研制建设了一套业务功能覆盖全面、支持能力突出、技术特色鲜明的一体化地面数据处理与服务系统,实现了多源海量数据自动化并行处理、高精度标准化产品生产、高效数据存档与可视化管理、数据质量分析与控制、在线分发服务及运营等功能.本文总结了国内外航天地面数据处理与服务系统现状及发展趋势,分析了天宫二号应用任务空间科学与应用数据在处理、管理、共享服务等方面的技术要求,系统性地设计了地面数据系统的整体架构、业务流程、功能与接口等,详细设计并实现了数据并行处理与产品生产、可视化数据存储与管理、系统运行管理与控制、数据质量分析与控制及数据在线共享服务等方面的业务功能,进一步分析了新型对地观测载荷高精度数据处理、业务流程高并发调度与管控技术等关键技术问题并阐述了具体解决方案.该系统已稳定运行三年,为国内外广大科研工作者累计提供了超过48 TB的数据产品,为中国载人航天工程空间应用各领域科学研究、成果产出及应用推广发挥了重要的地面数据系统技术支撑与保障作用.

Driven by the demand for effective data processing,archive management,quality analysis,and operational services,as well as the requirement that data applications utilize the payloads of Tiangong-2 with various mechanisms that are designed for advanced scientific experiments and earth observation,an integrated and ground-based data processing and service system with comprehensive support capabilities and intuitive technology features was developed.The system enables multisource and automated massive dataparallel processing.It has high-precision and high-quality production and enables efficient data archiving.It also facilitates visual management,data quality analysis,and control,online distribution services,and operation,etc.This paper(1)summarizes the current situation and development trend of ground processing and service systems for space data;(2)analyzes the technical requirements in processing,management,and sharing of space data for Tiangong-2 applications;(3)systematically introduces the overall architecture,operation processes,functions,and interfaces of the ground data system;(4)designs and implements in detail the functions of data-parallel processing and product production,visual-data storage and management,system scheduling and control,data quality analysis and control,and data online sharing services;(5)further analyzes key technical problems of high-precision data processing and concurrent dispatching of business processes for new earth observation payloads;and(6)elaborates the specific solutions.The system has been running steadily for 3 years and has provided more than 48 TB data products for researchers around the world.The ground data-processing system has played an important role in supporting scientific researches,outputs,and application promotion in various application fields of China Manned Space Engineering.