Data transmission method based on Tiantong satellite and broadband satellite fusion

The invention discloses a data transmission method based on fusion of a Tiantong satellite and a broadband satellite, and the method comprises the following steps: S1, enabling a user to generate basic transmission content into Tiantong narrowband data through an application program, and transmitting the Tiantong narrowband data to a satellite broadband and narrowband fusion data gateway through a lightweight data transmission interface; and S2, broadband data transmitted by the satellite broadband indoor unit is accessed to the satellite broadband and narrowband fusion data gateway through an Ethernet module. According to the method, important data transmission is performed through link judgment and a lightweight protocol, so that the problems that the cost of an existing double-satellite data link is too high and a single broadband link is influenced by severe weather and is difficult to ensure the return of important data are solved, remote technical support before the broadband satellite terminal is opene