实际应用中，针对不同的电离层电波传播效应，对不同的电离层参量特性，需采用不同手段的观测或不同参量模式的预测预报，解决不同的应用需求。这种"各自为阵"的方式不仅浪费资源，应用效果也较差。为此，本文提出了数字电离层概念，即综合利用中国已有及已经立项的空地多源立体探测体系，在电离层模式化研究的基础上，通过数据融合和数据同化，用数字化方式描述电离层状态参量过去、现在和未来的状况，高效统筹解决各类工程应用中对不同电离层参量的需求。介绍了数字电离层建设的必要性和国内外现状，重点说明了其主要内容和面临的技术瓶颈。
In real applications regarding ionospheric radio wave propagation, the community usually needs appropriate ionospheric parameters on a case by case basis, due to different methods, models, and requirements in the forecast. The kind of ‘lack of coordination’ way not only wastes resources but also degrades the application performance. In this paper we propose a new concept ‘numerical ionosphere’to describe the past, present, and future of ionospheric parameters through assimilating multiple observations into the model to solve the demand of different ionospheric parameters in various engineering applications efficiently and comprehensively.Then, we address the necessity and status of numerical ionosphere development. Finally, we focus on the main content and technical bottleneck of numerical ionosphere.
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