Frontiers of Data and Domputing ›› 2022, Vol. 4 ›› Issue (1): 84-96.doi: 10.11871/jfdc.issn.2096-742X.2022.01.007

• Special Issue: Union of National Scientific Data Center • Previous Articles     Next Articles

Research Progress of Earth Observation Knowledge Hub

LI Jin2(),CHEN Zugang1,*(),LI Guoqing1()   

  1. 1. Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China
    2. Zhengzhou University, Zhengzhou, Henan 450000, China
  • Received:2021-10-07 Online:2022-02-20 Published:2022-03-04
  • Contact: CHEN Zugang;;


[Objective] The sharing of scientific data in the field of earth observation cannot directly provide users with solutions to problems, it is necessary to provide knowledge sharing support for problems or applications. The establishment of an earth observation knowledge hub can effectively support the sharing of knowledge elements in the field of earth observation, promote the reuse of earth observation knowledge (especially the implicit knowledge expressed by models and algorithms), and improve the ability to apply earth observation knowledge to solve major problems. [Coverage] This paper obtains the literature on knowledge hub and earth observation field knowledge hub through the literature survey. [Methods] The concept connotation, implementation technology, and method of earth observation knowledge hub are analyzed utilizing the literature analysis method. [Results] The concept, main content, characteristics, and functions of the earth observation knowledge hub are summarized. The realization methods of the earth observation knowledge hub are presented. The application of the earth observation knowledge hub is forecasted. [Limitations] Since there is no publicly available knowledge hub system, the specific realization technology of the knowledge hub may not be fully described. [Conclusions] Earth observation knowledge hub is a new development trend of earth observation data sharing, which can effectively promote the knowledge reuse of earth observation and will become a knowledge sharing infrastructure widely used in the field of earth observation in the future.

Key words: knowledge hub, earth observation, knowledge sharing