利用OPNET对铱星系统进行网络性能仿真.pdf

The Analysis and Simulation of Communication Network in Iridium System Based on OPNET YU Jia ZONG Peng Department of Astronautics, Department of Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing, China Nanjing, China yujiahahaha@126.com pengzong@ Abstract— Constellation network is the foundation and key of OPNET. With the orbit technology of spacecraft, it can the development of aerospace in the future, especially Iridium establish the complicated spatial network constituting, and system. The Iridium system is a satellite-based, wireless analysis the performance of the network. personal communications network designed to permit a wide range of services. In this article, it uses network analysis software OPNET, with the orbit technology of Iridium satellites, to establish the complicated spatial network constituting, and analysis the performance of the network. The methods are applicable to other LEO satellite constellations and the research work is the foundation for further research on the LEO satellite constellation. Keywords-Orbit; Coverage; Iridium; OPNET; Throughput; SNR; Time delay I. INTRODUCTION The Iridium satellite system consists of an interconnected