The Design And Research Of High-power Satellite Uplink Earth Station

Radio and television is a civilized country and area, a sign of progress, is now the cause of world each country and region has very important. The information transmission ability effective wide, fast, radio and television, affect the ability of the profound, is one of the important parts in the world of multimedia. Now TV with digital technology continues to develop, more and more high technology content, the application of new technology is more and more. The new technology unceasingly satellite radio and television transmission, in radio and television transmission field position is also more and more high.Radio and television communication network is composed of a satellite, cable, microwave three basic transmission modes. Satellite broadcasting has wide coverage, not affected by topography, receiving the advantages of convenience, occupy an important position in the radio and television communication network in the country, is the powerful supplement ground cable and microwave transmission of radio and TV, satellite radio and television has become an important means of China’s Radio and television signal transmission. But because the satellite broadcast transmission by using communication satellite signal transmission as a relay station, is an open transmission system, vulnerable to interference. In recent years,"Falun Gong" hostile to radio and television transmission system in our country, interference on the destruction of China’s Radio and television career caused extremely serious influence. Ensure the satellite broadcast security relates to the national security and social stability, so the design and establishment of a high-power satellite uplink earth station is a satellite TV broadcasting normal broadcast and in the face of "unlawful interference" important safeguard case broadcast.Satellite radio and television transmission system consists of satellite ground station, station three parts communication satellite, satellite receiver. Satellite ground station in charge of the program signal is sent to the satellite communication on the corresponding task, while also receiving monitoring satellite downlink signal are normal. Satellite ground station power but also bears the "malicious interference" signal interference with normal satellite radio and television transmission signal, and ensure the normal program signal for "malicious interference" signal effectively suppress, don’t expose illegal picture, image, sound, text, guarantee the party and the country’s voice out, go out. Therefore high-power satellite design ground station is an important part, its design will directly influence the quality of broadcasting.