Abstract
With the continuous development of satellite technology, to achieve a complete and reliable information transmission has become a hot space information technology research, building space information network is imperative. Aiming at the characteristics of the existing spatial information network structure and the complexity of technical problems, the spatial network is studied and analyzed according to the method of functional classification and structure stratification. Firstly, the networking structure of spatial comprehensive information network is introduced. Then the existing spatial information network is classified according to the functional purpose, and the existing spatial network system research status is introduced according to the category. Finally, the spatial network is divided by the idea of analog stratification. The research hotspots of each layer are introduced, and the key technologies of spatial routing are analyzed.
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