A High-Altitude Platform Air-Ground Wireless Communication System Based on Beidou

Aerostat platforms could serve as potential aerial platforms because of their low cost, long flight times, and easy load recovery. They are suitable for emergency communication, early warnings, Earth observations, and other fields. The air-ground communication link between an aerostat platform and the ground is the basic guarantee for aerostat measurement control and service transmission. In traditional aerostat applications, platform measurement control and service transmission usually use different links. The load and ground equipment are complex, and the energy, load, and size of the platform are greatly occupied. In this paper, we propose a Beidou-assisted air-ground communication ground for a near-space platform that uses Beidou's positioning and communication functions to provide tracking and guidance information for the ground station. An air-ground wireless communication mode integrating measurement control and service transmission is achieved. The flight test shows that the system can effectively meet the practical application requirements.