%0 Journal Article
%A PAN Ji
%A WEI Wen-kang
%A YAN Kang
%A ZHANG Lei
%A LI Wei
%T Research on Frequency Compatibility of Collaboration-Based Large-Scale NGSO Constellations
%D 2020
%R 10.13190/j.jbupt.2020-189
%J Journal of Beijing University of Posts and Telecommunications
%P 110-117
%V 43
%N 6
%X Aiming at the problem of co-frequency interference between large-scale non-geostationary orbit(NGSO)constellation systems, we established the interference analysis model of link angle to convert communication interference constraints into geometric configuration constraints based on the comprehensive analysis of the mutual conversion relationship of the traditional interference evaluation indicators. Furthermore, the system availability index is defined by satellite selection and link combination selection. On basis of this, we carry out some researches on frequency compatibility of collaboration-based large-scale NGSO constellations, in which the working mode of NGSO constellation in cooperation mode is given. In this simulation, the actual working parameters of OneWeb and Telesat systems are selected to evaluate the system availability on a global scale. The result illustrates that the average system availability in non-cooperative mode is 72.82% since the severe interference will occur between systems in 27.18% of the time, while the average system availability in cooperative mode is 96.00%, which means cooperation mode will greatly improve the compatibility of NGSO communication constellation systems.
%U https://journal.bupt.edu.cn/EN/10.13190/j.jbupt.2020-189