Open Access
表1
各备份层级中备份卫星的部署场所及特点
| 备份层级 | 部署场所 | 特点 |
| 空间备份 | 各星座工作轨道或低于星座工作轨道的各停泊轨道 | 可以快速替换故障卫星, 最大程度保证星座性能。 |
| 地面备份 | 地面仓库 | 替换故障卫星耗时长, 但是储存成本低廉, 可以具有较多的备份数量。 |
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.