Satellite finding device, system and method based on satellite beacons and service carrier waves
A technology of service carrier and satellite beacon, applied in the field of satellite communication data transmission, can solve the problems of satellite search failure, hidden dangers of satellite radio and television technology, etc., and achieve the effect of low cost and high promotion value
Inactive Publication Date: 2015-09-23
EAST CHINA NORMAL UNIV +1
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Problems solved by technology
However, the use of program carriers to search for satellites on mobile carriers may cause star-seeking failures due to the long period of the TV receiving system processing satellite signals, which lays a great hidden danger for the function expansion and application promotion of satellite radio and television technology.
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Embodiment 1
[0035] An offshore operation vessel only needs to carry out operations in the ocean for a long time, and it is planned to enable the crew to watch current affairs news, important weather and domestic TV when the vessel is operating in the ocean. Since the operating range of ships at sea is outside the range of ground wireless coverage, the vast majority of communications rely on satellite communications. Satellite radio and television has the advantages of wide transmission frequency, large communication capacity, and rich and diverse transmission content. However, ships operating at sea are likely to be in a violently turbulent environment for a long time due to weather effects when maneuvering on the ocean, which poses challenges for accurate star finding and stable viewing of satellite broadcasting and TV. The crew can use the invention to realize the fast and accurate alignment of the satellite antenna to the satellite when operating in the ocean by the secondary discrimin...
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The invention discloses a satellite finding device based on satellite beacons and service carrier waves. The device comprises a first integrated tuner, a second integrated tuner, a main controller and a power divider, wherein the power divider is connected with both the first integrated tuner and the second integrated tuner, and divides satellite signals into two paths in which the satellite signals are identical, the first integrated tuner carries out automatic gain control on one path of satellite signals to generate AGC level signals, the second integrated tuner decodes and descrambles the other path of satellite signals and then outputs TS data, and according to the AGC level signals, the main controller controls a satellite antenna controller to lock a satellite initially, and carriers out secondary satellite searching discrimination on content flag bit information of the TS data. The content flag bit information of the TS data is applied to the satellite finding process, so that the satellite finding method is optimized at low cost. The invention also discloses a satellite finding system and method based on the satellite beacons and service carrier waves.
Description
technical field [0001] The invention belongs to the field of satellite communication data transmission, in particular to a satellite star-finding device, system and method based on satellite beacons and service carriers. Background technique [0002] Since the 1990s, satellite broadcasting and television has rapidly become an important way of public information transmission by virtue of many advantages such as wide transmission frequency bandwidth, large communication capacity, and rich and diverse transmission content, especially in the field of mobile carriers. [0003] The satellite star finding system is a key component of satellite broadcast TV reception, which is used to quickly find stars on the ground or on mobile carriers to ensure stable reception of satellite TV signals. At present, at home and abroad, most satellites are searched through satellite beacons or program carriers. Satellite beacons are single-frequency signals that characterize the presence and chara...
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IPC IPC(8): H04N7/20H04N5/50
Inventor 应斌杰徐文超
Owner EAST CHINA NORMAL UNIV