Low-orbit constellation GEO frequency interference avoidance method based on multiple coverage

A technology of frequency interference and low-orbit constellations, applied in radio transmission systems, electrical components, transmission systems, etc. Set and other issues, to achieve the effect of ensuring service coverage and benefiting autonomous beam management

Inactive Publication Date: 2020-04-03
CHINA ACADEMY OF SPACE TECHNOLOGY
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Problems solved by technology

[0004] The technical problem solved by the present invention is: in the current prior art, the current low-orbit communication constellation GEO interference avoidance method makes the attitude of the low-orbit satellite periodically biased, which is not conducive to the work of other loads of the low-orbit satellite, and is not conducive to the attitude control of the low-orbit satellite The problem of engineering implementation, a method based on multiple coverage of low-orbit constellation GEO frequency interference avoidance

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  • Low-orbit constellation GEO frequency interference avoidance method based on multiple coverage
  • Low-orbit constellation GEO frequency interference avoidance method based on multiple coverage
  • Low-orbit constellation GEO frequency interference avoidance method based on multiple coverage

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[0035] A low-orbit constellation GEO frequency interference avoidance method based on multiple coverage, such as figure 1 Shown is a schematic diagram of low-orbit satellite operation under normal working conditions, figure 1 Among them, 1 is the low-orbit satellite orbit; 2 is the earth; 3 is the low-orbit satellite; 4 is the running direction of the low-orbit satellite; 5 is the descending node of the low-orbit satellite; 6 is the ascending node of the low-orbit satellite. When the low-orbit satellite and the GEO satellite move to a close relative position, such figure 2 The GEO frequency interference shown is due to the low isolation angle on the satellite, which interferes with the communication between the ground station and the GEO satellite. figure 2 Among them, 1 is the ground station; 2 is the isolation angle βi on the satellite; 3 is the low-orbit satellite; 4 is the interference signal of the low-orbit satellite; 5 is the GEO satellite carrier signal; 6 is the GE...

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Abstract

The invention discloses a low-orbit constellation GEO frequency interference avoidance method based on multiple coverage. In view of the problem that in a current low-orbit communication constellationGEO interference avoidance method, the attitude of a low-orbit satellite is periodically biased, other loads of the low-orbit satellite cannot work easily, and low-orbit satellite attitude control engineering cannot be achieved easily, GEO frequency interference avoidance is achieved through opening and closing of different low-orbit satellite beams in a low-orbit constellation, and continuity oflow-orbit constellation services is guaranteed. And meanwhile, in the whole working process of the low-orbit satellite, the satellite attitude can always keep a normal three-axis stable attitude to the ground, so that the work of other loads of the low-orbit satellite is facilitated, and the engineering realization of a satellite attitude control system is also facilitated.

Description

technical field [0001] The invention relates to a low-orbit constellation GEO frequency interference avoidance method based on multiple coverage, and belongs to the field of low-orbit satellite frequency interference avoidance. Background technique [0002] With the development of satellite technology, human beings' demand for high-speed network access services on a global scale continues to grow, prompting the rapid development of low-orbit broadband communication constellations that use a large number of low-orbit satellites to form communication constellations. Communication satellites receive radio signals sent from the earth's surface, and at the same time transmit radio signals to the earth's surface to achieve communication with the ground. However, with the continuous development of satellite communication technology and the substantial increase in the demand for satellite communication, the frequency resources available for communication satellites are becoming more...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185
CPCH04B7/18513H04B7/18519
Inventor 李峰齐彧侯凤龙林骁雄李新刚裴胜伟陈东包泽宇
Owner CHINA ACADEMY OF SPACE TECHNOLOGY
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