Research on Simulation Technology for Space-ground Integrated Network

With the development of space networking technology, Space-ground integrated network (SGIN) has become an important infrastructure for global communication node interconnection and spatio-temporal information sharing. The establishment of an accurate, reliable and cost controllable integrated network test and simulation environment has important theoretical and practical significance to analyze and evaluate the performance of SIGN. In this paper, we study the simulation technology for SGIN. According to the constellation simulation and network simulation software used, we summarize and compare the current integrated network simulation technology. Then, based on the current mainstream virtualization technology, the design scheme of simulation environment is introduced in detail and the experimental verification of link and topology is carried out. Related research and design scheme can be used to provide reference for evaluation and application of SGIN.