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Interference probability distribution calculation method and device for satellite constellation

A satellite constellation and interference probability technology, applied in the field of satellite communications, can solve problems such as interference, failure of ordinary PCs to complete simulation, and increased calculation

Active Publication Date: 2020-12-29
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the giant constellation scenario, the number of satellites is huge, and the extrapolation method will lead to a substantial increase in the amount of calculations, and even ordinary PCs cannot complete the simulation
In addition, the extrapolation method requires a long simulation cycle to obtain the maximum probability of interference

Method used

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  • Interference probability distribution calculation method and device for satellite constellation
  • Interference probability distribution calculation method and device for satellite constellation
  • Interference probability distribution calculation method and device for satellite constellation

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Experimental program
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Embodiment 1

[0027] figure 1 It is a flow chart of a method for calculating the interference probability distribution of a satellite constellation according to an embodiment of the present invention, and the method is applied to a satellite constellation. Optionally, the somatosensory method in the embodiment of the present invention can be applied to GSO (Geostationary-Satellite Orbit, geostationary satellite orbit) constellation, common NGSO (Non-Geostationary Satellite Orbit, non-geostationary satellite orbit) constellation and giant NGSO constellation . Such as figure 1 As shown, the method specifically includes the following steps:

[0028] Step S102, divide the setting area of ​​the interfered satellite constellation to obtain a plurality of first sub-areas; perform area division on the setting area of ​​the interfering satellite constellation to obtain a plurality of second sub-areas; set the area as the reference satellite of the satellite constellation Area. Wherein, the distu...

Embodiment 2

[0063] In this embodiment, a specific constellation is taken as an example to simulate the method in the first embodiment above, and the selected constellations are all Walker constellations, and the Walker constellations can be further subdivided into star constellations, delta constellations, and the like. Select the parameters in Table 1 and Table 2 to complete the corresponding simulation, and calculate the probability distribution of downlink interference between the NGSO constellation and the mega-constellation. Among them, Table 1 is the NGSO constellation system simulation parameters, Table 2 is the communication simulation parameters, A constellation is the disturbed constellation, which is a common NGSO constellation; B constellation is the interference constellation, which is a giant constellation. Constellation A adopts the shortest distance access strategy. Its satellites use dynamic spot beams and adopt staring service mode. Constellation B uses fixed beams and ad...

Embodiment 3

[0118] Figure 6 It is a schematic diagram of a satellite constellation interference probability distribution calculation device provided according to an embodiment of the present invention, and the device is applied to a satellite constellation; optionally, the somatosensory device in the embodiment of the present invention can be applied to a GSO (Geostationary-Satellite Orbit, for Geostationary Satellite Orbit) constellation, ordinary NGSO (Non-Geostationary Satellite Orbit, non-geostationary satellite orbit) constellation and giant NGSO constellation. Such as Figure 6 As shown, the device includes: an area division module 10 , a first generation module 20 , a second generation module 30 , a first calculation module 40 and a second calculation module 50 .

[0119] Specifically, the area division module 10 is used for area division of the setting area of ​​the interfered satellite constellation to obtain a plurality of first sub-areas; to area division of the setting area ...

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Abstract

The invention provides an interference probability distribution calculation method and device for a satellite constellation. The method and device are applied to the satellite constellation. The method comprises the following steps: respectively carrying out region division on setting regions of an interfered satellite constellation and an interfering satellite constellation to obtain a pluralityof first sub-regions and a plurality of second sub-regions; generating a plurality of first constellation snapshots and a plurality of second constellation snapshots based on the orbit parameters of each reference satellite in each first sub-region and each second sub-region and the constellation configuration parameters of the satellite constellation; respectively calculating the lumped interference of the visual satellite under each second constellation snapshot to the access satellite under each first constellation snapshot and the probability of generating the lumped interference based onthe occurrence probability of the reference satellite in each first subarea and each second subarea; and calculating the interference probability distribution of the interference satellite constellation to the interfered satellite constellation. According to the method, the technical problem of large interference probability distribution calculation amount of simulating the giant constellation byusing an extrapolation method in the prior art is relieved.

Description

technical field [0001] The invention relates to the technical field of satellite communication, in particular to a method and device for calculating the interference probability distribution of a satellite constellation. Background technique [0002] Interference probability distribution is a common evaluation method to describe the interference between constellation satellites. By calculating the interference probability distribution between constellation satellites, the interference situation of one constellation to another constellation can be evaluated, and then it can be judged what interference avoidance strategy and interference avoidance strategy should be adopted. What is the effect and so on. Therefore, the interference probability distribution is the premise of interference analysis. [0003] At present, the calculation methods of interference probability distribution can be divided into extrapolation method and numerical method. The extrapolation method is usua...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/345H04B17/391H04B17/40H04B7/185
CPCH04B7/18521H04B17/345H04B17/3912H04B17/40
Inventor 靳瑾林子翘晏坚匡麟玲
Owner TSINGHUA UNIV
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