Abstract：Under the background of air-space defense integration operations, the information system is a link between multiple platforms and systems, and contacts space equipment and ground systems. The establishment of three-dimensional air-space defense combat system is the core of the integration of air-space defense integration. The article starts with the need of air-space defense combat, expounds the structure and composition of the air-space defense information system, puts forward the ultra high speed communication technology, heterogeneous terminal random access technology and space information security technology as the three key technologies of air-space defense information system, and analyzes the development of the technical needs.
