Satellite broadcast data ground fixed two-way station and data transmission method thereof

Abstract

The invention discloses a satellite broadcast data ground fixed two-way station and a data transmission method thereof. The satellite broadcast data ground fixed two-way station comprises a system management control platform mainly consisting of a master control unit, a user gateway and a user interface; an antenna feed system mainly consisting of a ground fixed station antenna with receiving and sending functions and a radio frequency unit with receiving and sending functions; system application software comprising application software of an ocean remote sensing data satellite broadcast two-way station; an IDU device, a Beidou subscriber machine, an A-TDM modulator / demodulator, an encryption / decryption unit and a Beidou receiving and sending module; the ground fixed two-way station receives and sends satellite broadcast signals through the antenna feed system and performs uniformed control and management on data information to be received and sent and Beidou information sent by the Beidou receiving and sending module through the master control unit; and the ground fixed two-way station sends an information on-demand application or inquiry request to a release center through the Beidou receiving and sending module, and uploads its own position information. The satellite broadcast data ground fixed two-way station disclosed by the invention realizes wide-area efficient information broadcast distribution capability, a secure authorization mechanism and conditional reception of ocean remote sensing data.

Description

technical field [0001] The invention relates to the field of satellite communication, in particular to a ground fixed two-way station for satellite broadcast data and a data transmission method thereof. Background technique [0002] At present, my country's satellite communication usually uses several major foreign satellite communication system products such as Inmarsat, Thuraya, and Iridium. Although the communication quality is high, they all belong to narrow-band communication, the transmission rate is low, and multimedia, etc. cannot be realized. High-speed communication business. At the same time, the high cost of after-sales maintenance of foreign products and the time lag are difficult problems to solve. [0003] Compared with foreign countries, the level of domestic satellite communication technology is far behind, especially in the civil satellite system and application technology, the country is still in its infancy. Over the years, domestic satellite application...

AI Technical Summary

Problems solved by technology

The satellite communication system independently developed by our country can basically meet the needs of the military, but there is no mature commercial satellite communication system solution in the civilian market, which is in stark contrast to the huge domestic market demand

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