Abstract:With the continuous development of the aviation industry, the current IRIG-106 standard S-band of point-to-point PCM data transmission system used in aviation testing can no longer meet the needs of new technologies and new test development tests. It is necessary to break through the existing transmission system and explore new data transmission mode. Combined with the American iNET standard, the C-band is selected as the telemetry transmission frequency band. Based on the mature network communication technology, the research on the construction of the C-band base station multi-target telemetry network is carried out, mainly from the aspects of architecture design, access system, system development, etc. Were studied. Finally, it was verified by constructing a C-band base station multi-target telemetry network flight test demonstration and verification system. The verification results show that the system designed in this paper can realize the transmission of telemetry data. Through the research on the construction technology of the C-band base station multi-target telemetry network, it has broken through the traditional telemetry system and realized the C-band base station telemetry data transmission, which provides the foundation for high-speed, two-way, multi-target air-ground data transmission.