A satellite constellation implementation method using return orbit to implement communication

A technology of satellite constellation and return to orbit, applied in the field of satellite communication, can solve the problem of high difficulty, and achieve the effect of reducing the difficulty of coordination, reducing co-channel interference, and avoiding co-channel interference

Active Publication Date: 2019-01-04
TSINGHUA UNIV
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  • Claims
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It is extremely difficult to obtain an end-use license

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  • A satellite constellation implementation method using return orbit to implement communication
  • A satellite constellation implementation method using return orbit to implement communication
  • A satellite constellation implementation method using return orbit to implement communication

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Embodiment Construction

[0016] The present invention will be described in detail below with reference to the drawings and embodiments.

[0017] The present invention provides a method for implementing a satellite constellation for communication using a regression orbit, which includes the following steps:

[0018] 1) Determine the regression period and the semi-major axis of the orbit, as well as the inclination of the orbit, the eccentricity of the orbit and the argument of perigee;

[0019] Among them, according to the width of the satellite coverage strip and communication delay requirements, determine the regression period and the semi-major axis of the orbit in a preset set; determine the orbit inclination according to the latitude distribution of the coverage area, so that the orbit inclination is not lower than the coverage The geocentric angle corresponding to the half beam width is subtracted from the highest latitude of the area; the eccentricity and argument of perigee of the orbit are determined...

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Abstract

The invention relates to a satellite constellation implementation method for implementing communication by utilizing the return orbit, and the steps are as follows: determining the return period and the semi-major axis of the orbit, as well as the inclination angle of the orbit, the eccentricity of the orbit and the argument of perigee; determining the number of satellites and the number of orbit planes are n; determine the ascending node right ascension and the perigee angle of the first satellite, and determine the ascending node right ascension and the perigee angle of the subsequent satellites in turn according to the service requirements of the satellite; determine the set of geostationary orbit satellite networks that need to be coordinated; The width of the non-stationary satellite constellation to the static satellite interference protection zone; at any position on the ground, all the satellites set up in the air are seen to pass over the top one after another along a fixed and the same trajectory. After multiple coverages are formed, the ground user can watch the to multiple satellites; if the satellite trajectories pass through the guard zone of interference to stationary satellites, when the current access satellite enters the guard zone, the ground user switches to another satellite that is not within the guard zone to continue communication.

Description

Technical field [0001] The invention relates to the technical field of satellite communication, in particular to a method for implementing a satellite constellation that uses a regression orbit to implement communication in a non-stationary orbit communication constellation with global coverage. Background technique [0002] Satellite Internet is the best and possibly only option in the evolution of the Internet to space. Taking into account the limitations of the geostationary orbit, the non-geostationary orbit satellite constellation network will become an important part of the satellite Internet. Currently, a number of large-scale non-geostationary orbit satellite constellation projects have been launched or announced plans worldwide. The O3b network system built by Google uses an equatorial orbit with an inclination of 0° and an orbit height of 8062Km. There are currently 12 satellites in orbit, with a total throughput of 12GBit / s per satellite. The main coverage area of ​​...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/185
CPCH04B7/1851H04B7/18519H04B7/18521B64G1/1007B64G1/1085H04B7/18541
Inventor 靳瑾晏坚匡麟玲
Owner TSINGHUA UNIV
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