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Satellite communication system

A satellite communication system and satellite communication technology, applied in transmission systems, short-distance systems, radio transmission systems, etc., can solve the problem of limited signal coverage of satellite systems, lack of line-of-sight between relays and communication terminals, and broken signal links Opening and other issues, to achieve the effect of improving signal transmission performance, strong confidentiality, and low transmission power

Inactive Publication Date: 2019-01-22
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This will cause the line-of-sight (LOS) condition between the relay and the communication terminal not to be met, resulting in disconnection of the signal link or failure to connect (communication link marked with × in the figure), which will lead to limited signal coverage of the satellite system

Method used

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Embodiment Construction

[0021] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] Please refer to figure 2 , figure 2 It is a schematic diagram of the implementation of a satellite communication system in the embodiment of the present invention. The system includes:

[0023] Communication satellite 100, relay 200, and communication terminal 300; wherein, there is a satellite communication link between the communication satellite and the relay, and there is a relay communication ...

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Abstract

The invention discloses a satellite communication system, which comprises a communication satellite, a relay and a communication terminal. A satellite communication link is arranged between the communication satellite and the relay, and a relay communication link is arranged between the relay and the communication terminal. Radio waves are used for communication over satellite communication linksand free space light is used for communication over relay links. Free Space Optical Communication (FSO) can propagate signals in non-LOS conditions. Thus, the use of free space optical communication in a relay communication link between a relay and a communication terminal can propagate signals under non-LOS conditions, thereby increasing the signal coverage of a satellite communication system.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a satellite communication system. Background technique [0002] Satellite systems have been widely used for broadcasting, navigation and disaster recovery. The most common signal transmission method of satellite communication: satellites communicate with ground communication terminals (such as satellite phones, satellite TV, etc.) through ground relays. [0003] At present, radio waves are used for communication in the satellite system, and the terrain between the relay and the communication terminal is relatively complicated. Please refer to figure 1 , blocked by various obstacles, such as mountains, tall buildings, etc. This will cause the line-of-sight (LOS) condition between the relay and the communication terminal not to be met, resulting in disconnection of the signal link or failure to connect (communication link marked with × in the figure), which will lead to li...

Claims

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Application Information

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IPC IPC(8): H04B7/185H04B10/116
CPCH04B7/1851H04B10/116
Inventor 杨亮廖朝晖
Owner GUANGDONG UNIV OF TECH
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