【作者】 周淦； 张方； 甘彤； 喻瑶瑶； 丰大军；

【Author】 Gan Zhou;Fang Zhang;Tong Gan;Yaoyao Yu;Dajun Feng;The 6th Research Institute of China Electronics Corporation;Xidian University School of Aerospace Science and Technology;

【机构】 中国电子信息产业集团有限公司第六研究所； 西安电子科技大学空间科学与技术学院；

【摘要】 星间链路是提升导航系统导航性能的关键技术。近年来,国内外学者在该领域取得了丰硕的成果,但对动态链路的选择策略研究较少,路由方案生成时考虑因素较为单一。针对以上研究现状,本文基于GEO/IGSO、MEO和地面站提出了一种多层链路拓扑及混合路由设计方案。首先,以持续可见链路为主,非持续可见链路为辅的原则,提出了一种基于代价函数的非持续链路选择方法,快速地生成满足建链准则的拓扑方案;然后通过综合考虑链路速率、节点负载和传输距离多种影响因素,探索并建立合理的混合评价函数,使算法能够从多条路径中选出最优的路由方案。最后,通过实验仿真验证了本文所提出的方法的有效性,这为合理的星间链路拓扑及路由生成提供了理论依据和应用基础。更多还原

【Abstract】 The inter-satellite link is the key technology to improve the performance of navigation system.In recent years,domestic and international scholars have achieved plentiful results in this field.Unfortunately,the selection of dynamic link has rarely been discussed and the considered factor in routing scheme is relatively homogeneous.With respect to the above research status,this paper presents a multi-layer link topology and hybrid routing design method on the basis of GEO/IGSO,MEO and ground stations.Firstly,the topology generation is based on the combination of permanent inter-satellite links and non-permanent inter-satellite links.With the application of cost function,a novel selection strategy for a non-permanent inter-satellite link is introduced,which can generate a topology that satisfies the principle of link establishment rapidly.Then,a reasonable mixed evaluation function can be explored and set up in the consideration of multiple factors such as link rate,node payload as well as transmission distance,so the optimal routing scheme can be successfully selected.Finally,the effectiveness of this approach is demonstrated by the experimental results,which provides a theoretical and application foundation for the reasonable generation of inter-satellite link topology and routing scheme.更多还原