On construction of china's space information network

Using space platforms as carriers, spatial information network (SIN) is a new kind of network system that implements real-time data acquisition, fast network transmission and information processing. Through real-time data access/transmission, networks interconnection and cooperative data processing, SIN could realize the integrated application and collaborative service of satellite remote sensing, satellite navigation and satellite communication. Firstly, the concept, function and characteristic of space information network are introduced. Then the significance and necessity of construction of China's SIN are represented after an analysis of development of SIN at home and abroad. Finally, the research objectives and scientific issues for China's SIN construction are discussed.