%0 Journal Article
%A CHEN Dong
%A LIU Nai-jin
%A QIAN Jin-xi
%A YANG Jing-hui
%A YUAN Ji-de
%T Research on Synchronization Performance of GMR-1 Satellite under Imprecise Antenna Pointing Condition
%D 2014
%R 10.13190/j.jbupt.2014.05.023
%J Journal of Beijing University of Posts and Telecommunications
%P 109-113
%V 37
%N 5
%X <p>For synchronization performance under imprecise antenna pointing condition, a satellite mobile communication system is established based on the geostationary orbit mobile radio interface (GMR-1) standard on the OPNET platform, the entire satellite synchronization performance is studied when the downlink antenna points inaccuracy. Its core idea is to complete the inaccuracy antenna pointing impact simulation through the interactive among mobile earth stations and gateway stations, to establish the mathematical model, to analysis and simulate the time synchronization and frequency synchronization performance to achieve the quantitative impact under imprecise antenna pointing condition. Analysis and simulation show that, compared with the satellite that has precise pointing antenna, the imprecise condition has little impact on the time synchronization, however, the frequency synchronization performance is relative to the location of the user, it may reduce the bit error rate performance by 10<sup>-1</sup> to 10<sup>-2</sup>.</p>
%U https://journal.bupt.edu.cn/EN/10.13190/j.jbupt.2014.05.023