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Internet constellation design method based on hybrid optimization

A design method and Internet technology, applied in the field of satellite constellation design, can solve problems such as multi-objective optimization, and achieve the effect of reducing time complexity and speeding up

Active Publication Date: 2019-03-19
CHINA ACADEMY OF ELECTRONICS & INFORMATION TECH OF CETC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a hybrid optimization-based Internet constellation design method to solve the multi-objective optimization problem in the low-orbit satellite constellation design existing in the prior art

Method used

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  • Internet constellation design method based on hybrid optimization
  • Internet constellation design method based on hybrid optimization
  • Internet constellation design method based on hybrid optimization

Examples

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Effect test

example 1

[0058] Example 1: 20 stars in the equatorial orbital plane

[0059] like image 3 As shown, in the case of one hop, the scheme can ensure uninterrupted communication between any two points within 1500km range at 23 degrees north and south latitude, and can well serve low-latitude regions including the South my country Sea.

example 2

[0060] Example 2: 24 stars and 3 orbital planes, the orbital inclination is 18 degrees, and each orbital plane has 8 stars

[0061] like Figure 4 As shown, after adopting the orbit with an inclination angle, the coverage area of ​​the scheme increases, and the communication angle in the coverage area increases. This solution can ensure real-time coverage of the first layer within 26 degrees north and south latitude. The communication angle in the northeastern sea area of ​​my country is between 130 and 500, and the communication angle in the southeastern sea area is between 200 and 600. However, compared with the equatorial orbital plane, the overlapping area of ​​adjacent beams becomes smaller, which can ensure that the area of ​​continuous and uninterrupted communication becomes smaller.

example 3

[0062] Example 3: 16 stars on the equatorial orbital plane, 8 stars with an orbital inclination of 35 degrees, a total of 24 stars

[0063] like Figure 5 As shown, this scheme can guarantee the primary coverage within the range of 55 degrees north and south latitude (non-real-time except for low latitudes), and can well serve my country's "One Belt, One Road" development strategy.

[0064] What needs to be explained is that the accompanying drawings of the description of the present invention Figure 3-5 The background color of is black, representing starry sky 1.

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Abstract

The invention discloses an Internet constellation design method based on hybrid optimization, and the method comprises the steps: building an optimization model under a preset constraint condition, and inputting parameters to be optimized into the optimization model; the optimization model is solved, and optimized parameters are output; and taking the optimized parameters as configuration parameters of the Internet constellation design. According to the embodiment of the invention, the mixed optimization concept is introduced into the low-orbit satellite constellation design, so that the defect that the optimization target of the traditional constellation design methods such as geometric analysis and simulation comparison is single is overcome. Meanwhile, a novel convex optimization algorithm solving algorithm under the multi-constraint condition is designed, the time complexity of the optimal solution solving process of the convex optimization algorithm is reduced, and therefore barriers, high in time complexity and low in convergence speed, of the convex optimization algorithm solving algorithm are broken through, and the constellation design speed is increased while the multi-optimization target optimal solution is obtained.

Description

technical field [0001] The invention belongs to the technical field of satellite constellation design, in particular to an Internet constellation design method based on hybrid optimization. Background technique [0002] The existing major low-orbit Internet systems, such as Iridium, Globalstar, Orbcomm, OneWeb, etc., adopt constellation scheme design methods mostly based on the principle of uniform distribution in geometric space, and the formed schemes are mainly divided into polar / near-polar orbit constellations and inclined Orbital constellations, including Walker's Delta constellation and Ballard's Rose constellation. For example, systems such as Iridium employ near-polar orbit constellations, while global magnitude systems employ delta constellations. [0003] Traditional constellation scheme design methods mainly include geometric analysis method and simulation-based comparative analysis method. These two types of constellation design methods are mainly to optimize a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/20
Inventor 崔司千陆洲白保存周彬李斌刘凯张纬栋胡振强李培林
Owner CHINA ACADEMY OF ELECTRONICS & INFORMATION TECH OF CETC
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