【摘要】 随着开放科学时代的来临和空天技术的高速发展,各类地球观测信息在分布式网络环境下得以充分共享,信息的可信度成为各界关注的焦点。地球观测信息溯源作为通过过程追踪保证信息质量的关键技术变得越来越重要。本文在对国内外地球观测信息溯源现状研究的基础上,提出了一种基于PROV模型扩展的地球观测信息产品溯源表达方法,通过对溯源模型中的实体、活动和代理进行分类扩展,以满足开放科学环境下地球观测信息的全过程溯源,并引入PROV-N表示法,以一种标准化的方式对地球观测信息的溯源过程进行案例分析。更多还原

【Abstract】 With the advent of the era of open science and the rapid development of space technology, all kinds of earth observation resources can be fully shared in the distributed network environment, and the credibility of information has become the focus of all circles. Earth observation information traceability is becoming more and more important as a key technology to ensure information quality through process tracing. Based on the current status of earth observation information traceability at home and abroad, this paper proposes an expression method of earth observation information product traceability based on PROV model extension. Through the classification expansion of entities, activities and agents in the traceability model, the whole process of earth observation information traceability in the open scientific environment is satisfied. And this paper introduces PROV-N notation, a case study is conducted on the traceability process of earth observation products in a standardized way.更多还原