【摘要】 为了提高卫星导航系统的导航性能,增强自主运行能力,解决我国区域测控网布站的局限性问题,发展星间链路(InterSatellite Links,ISL)成为卫星导航系统发展的必然趋势。简要分析了由GEO/IGSO星层、MEO星层和地面站所构成的立体式导航星座网络的拓扑结构,并着重对节点之间的路由问题进行深入研究;综合考虑了等待时延、链路速率、节点负载和传输距离等多种影响因素,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所提方法的有效性,这为合理的星间链路路由方案的生成提供了理论依据和应用基础。更多还原

【Abstract】 For the purpose of improving the navigation performance and solving the limitations of observatory,the development of inter-satellite links( ISL) has become an inevitable trend of navigation satellite systems. The paper does a brief analysis of the three-dimensional network topology consisting of GEO/IGSO satellite layer,MEO satellite layer and ground station. Then,a reasonable mixed evaluation function can be explored and set up in the consideration of multiple factors such as wait delay,link rate,node payload as well as transmission distance,so the optimal routing scheme can be successfully selected. Finally,the effectiveness of the proposed method is verified by experimental simulation.This method provides a theoretical basis and application basis for the generation of a reasonable inter-satellite link routing solution.更多还原