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中文摘要：
研究了混合轨道卫星通信系统的路由算法，系统由低轨道和静止轨道卫星构成。提出了“最长覆盖时间”和“最短路径”的路由算法，并作了相应的分析和仿真，对两种算法的路由重构率和数据报丢失率等方面作了比较。结果表明：“最长覆盖时间”算法与“最短路径”算法相比，能更有效地改善系统的性能。
英文摘要：
Routing algorithms of satellite communication system with hybrid orbit are studied. The system consists of LEO and GEO satellites. ＂The longest covered-time＂ and ＂the shortest path＂ routing algorithms are proposed, which are analyzed and simulated. Route reconstructed rate and datagram loss rate are compared for the two algorithms. The results indicate that ＂the longest covered-time＂ routing algorithm can improve the system performance compared with ＂the shortest path＂ one.
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