The Analysis and Simulation of Effects of Background Noise on Inter-Satellite Links

Abstract

Along with the technical development of satellite communication, building the high way of communication among satellites with inter-satellite links (ISLs) is more and more concerned. But because of the complicated surroundings of the satellites, the ISLs are inevitably interfered by background noise such as the electromagnetic radiation from the sun and the glisten from the moon and so on. In order to decrease the noise and improve the whole performance of satellite communication system as soon as possible, we should know which ISLs are interfered in certain time. In this paper, we improve the model of background noise firstly, propose the interference criterion. Secondly, we build a model of constellation and ISLs referring to the Iridium system with 66 satellites, then a system simulation is made with Satellite Tool Kit（STK）. While simulating, we pay more attention to the ISLs’ interference from the sun and the moon. Finally, we conclude that the interfered ISLs can be specified quickly and correctly using the model in this paper and the software of STK. Thus a fast and effective way to study the effects of background noise on ISLs is provided.