太阳风-磁层相互作用全景成像卫星（SMILE）是中欧合作的空间科学卫星任务，旨在对向阳侧磁层顶、极尖区和地球极光进行整体成像，预期于2021-2022年发射。本项目针对SMILE计划的科学探测任务开展前期的科学研究，主要包括（1）软X-射线和紫外成像中确定磁层-电离层大尺度结构的理论和方法；（2）磁层顶磁场重联-极尖区运动-极光区变化的动态关联过程和变化规律；（3）磁暴和亚暴的磁层-电离层大尺度结构的表征。本项目将在数据处理方法和跨区域物理现象的关联和变化规律等方面为SMILE卫星发射后“快出成果，多出成果”奠定基础。

The Solar wind – Magnetosphere – Ionosphere Link Explorer (SMILE) is a joint ESA-CAS space science mission, aiming at obtaining images of the dayside magnetopause, cusp region and aurora at large scales. The launch date is expected to be 2021-2022. We propose to carry out pre-study related to the SMILE science, which includes (1) the effective methods to determine magnetosphere – ionosphere structures from soft-X and ultraviolent images; (2) the correlations between the magnetic reconnection at the dayside magnetopause, the movement of cusp regions and aurora variations both in shape and intensity; (3) the identification of the storm and substorm in the large-scale structures of the magnetosphere and ionosphere. This effort will prepare data-analysis method and physical insights on the link of physical phenomena in different regions, in order to achieve fast and more scientific accomplishes after the launch of SMILE.