Satellite-based information transmission system

Abstract

A satellite-based information transmission system mainly comprises a Beidou user machine, information transmission equipment, a multifunctional integrated service terminal and satellite communication antennas, wherein the information transmission equipment performs interaction of control information with the satellite communication antennas and the Beidou user machine through serial ports, and performs data transmission with the information integrated service terminal by use of a satellite channel and a Beidou channel; and the information transmission equipment includes a main control board, an adapter plate, a power module, a power panel and a modulation and demodulation module. A software system of the information transmission equipment adopts a bus distributed structure, an equipment control module is designed to include three layers, and the layers are respectively responsible for mutually independent tasks, thereby improving the cohesion of modules, reducing the coupling degree, and maintaining independence of the modules. The information transmission equipment can support two satellite communication antennas, and when one of the satellite communication antennas is shielded, a satellite communication link can be continued to be kept uninterrupted as long as the satellite communication antenna is switched to the other satellite communication antenna that is not shielded.

Description

【Technical field】 [0001] The invention relates to the field of information communication, in particular to a communication technology suitable for long-distance ships, based on satellite signals and multifunctional integrated service terminals, Beidou antennas and satellite antennas. 【Background technique】 [0002] Information transmission equipment needs to have a series of functions, such as being compatible with satellite communication antenna interface and Beidou user machine interface, being able to communicate with the platform, providing uplink transmission channels for various data information of business terminal equipment, receiving and distributing various downlink data information, so , the data circulation and processing flow controlled by information transmission equipment are very complicated, and the comprehensive control and processing of information is a difficult problem. [0003] Limited by the technical performance of the Beidou system, the amount of inf...

AI Technical Summary

Problems solved by technology

[0002] Information transmission equipment needs to have a series of functions, such as being compatible with satellite communication antenna interface and Beidou user machine interface, being able to communicate with the platform, providing uplink transmission channels for various data information of business terminal equipment, receiving and distributing various downlink data information, so , the data circulation and processing flow controlled by information transmission equipment are very complex, and the comprehensive control and processing of information is a difficult problem

[0003] Limited by the technical performance of the Beidou system, the amount of information sent and received by the Beidou user machine at one time is less than 72 bytes, and the interval between sending and receiving messages is greater than 60 seconds (Class II), which cannot meet the communication requirements in certain environments and seriously affects the comprehensive Integrity and reliability of salesman information sending and receiving

[0004] A system that relies on a single satellite for information transmission is highly dependent on its transmission satellite. When a satellite communication antenna is blocked, it will lead to the interruption of the satellite communication link.

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