Open Access
表2
替换故障卫星的Petri网符号意义
| 库所 | 意义 | 迁移 | 意义 |
| p1 | 卫星处于长期故障状态 | t1 | 地面发现故障 |
| p2 | 地面确定卫星发生故障 | t2 | 备份卫星短缺 |
| p3 | 等待备份卫星补充 | t3 | 补充备份卫星 |
| p4 | 备份卫星准备完毕 | t4 | 替换故障卫星 |
| p5 | 卫星正常可用 | t5 | 启用备份卫星 |
| t6 | 卫星发生长期故障 |
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