研究了混合軌道衛(wèi)星通信系統(tǒng)的路由算法，系統(tǒng)由低軌道和靜止軌道衛(wèi)星構(gòu)成。提出了“最長覆蓋時(shí)間”和“最短路徑”的路由算法，并作了相應(yīng)的分析和仿真，對(duì)兩種算法的路由重構(gòu)率和數(shù)據(jù)報(bào)丟失率等方面作了比較。結(jié)果表明：“最長覆蓋時(shí)間”算法與“最短路徑”算法相比，能更有效地改善系統(tǒng)的性能。
關(guān) 鍵 詞 衛(wèi)星通信; 混合軌道; 路由; 路由重構(gòu)率; 數(shù)據(jù)報(bào)丟失率

Abstract 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.
Key words satellite communication; hybrid orbit; route; route reconstructed rate; datagram loss rate