Abstract: : With the development of information and network technology, the ability to provide network services which can be accessed anytime and anywhere has become the focus of people's needs. Based on the research of air-sea cross- domain communication technology, combined with the concept and application scenarios of satellite networks, this paper introduces the working principle and system composition of the air-sea cross-domain communication network buoy system based on satellite links

Key words:  satellite communications, satellite network, air-sea cross-domain communication