Satellite constellation network different orbit link planning method

A satellite constellation and link planning technology, applied in the field of network communication, can solve problems such as the inability to deal with the installation of multiple antennas, the uncertainty of heuristic algorithms, and the instability of space network topology, achieving fewer link switching times and reduced calculations Amount and time-consuming, the effect of refined planning

Active Publication Date: 2021-12-24
BEIJING INST OF SPACECRAFT SYST ENG
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Problems solved by technology

In 2015, China Academy of Space Technology proposed a heuristic optimization algorithm based on simulated annealing in the "Acta Aeronautical Sciences" to solve the link allocation problem. However, this method does not take the antenna as the visibility research unit, so this method cannot Dealing with the situation where multiple antennas are installed on different sides of a satellite, and the heuristic algorithm has uncertainty, which causes diffic

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  • Satellite constellation network different orbit link planning method
  • Satellite constellation network different orbit link planning method
  • Satellite constellation network different orbit link planning method

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Embodiment 1

[0032] Such as figure 2 As shown, the present embodiment selects a Walker 28 / 4 / 0 satellite constellation network with 28 satellites in four orbital planes. The Walker 28 / 4 / 0 constellation includes four orbital planes, and each orbital plane has seven satellites. The satellites are evenly distributed, the phase difference between adjacent orbital planes is 0, and all satellite orbits are circular orbits with eccentricity of 0. The number of the first satellite on the first orbital plane is S11, and so on, the number of the mth satellite on the nth orbital plane is Snm. All satellites are equipped with four antennas, front, rear, left, and right, and the half angle of the antennas is 89 degrees. Each satellite can use the front and rear two antennas to establish a stable and continuous link with adjacent satellites on the same orbital plane, and use the left and right two antennas to establish a link with out-of-orbit satellites. The left antenna number of the mth satellite on...

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Abstract

The invention discloses a satellite constellation network different orbit link planning method, which can obtain a different orbit link establishment planning scheme with relatively stable network topology and efficient network management. The method comprises the following steps: calculating a regression period of a relative position relation of nodes of the satellite constellation network according to the orbit height, obtaining a link connectivity relation between antennas used for different orbit links in one regression period, and forming a link connectivity relation three-dimensional Boolean matrix; traversing all antennas which can be used for different-orbit link establishment, respectively selecting an antenna which has the longest sum of available time of a link with the antenna in a regression period from two adjacent orbit surfaces, and setting the available relation between the antenna and a non-preferred antenna to be non-available; and traversing each moment and each antenna of the regression period, selecting a different-track idle antenna from the link connectable relation three-dimensional Boolean matrix according to a longest continuous link establishment time algorithm for each antenna to establish a link with the antenna, and deducing a link establishment scheme of the regression period to other periods to obtain a final network topology plan.

Description

technical field [0001] The invention belongs to the technical field of network communication, and relates to a method for planning off-track links of a satellite constellation network. Background technique [0002] The satellite constellation network is a network system that uses satellites as network nodes to acquire, transmit and process space information in real time. At present, a number of large-scale satellite constellation projects with planned inter-satellite links are being planned or implemented for the purposes of wireless communication, earth observation, and reconnaissance at home and abroad. Due to the large number of satellites and the strong dynamics of the constellation, the current satellite constellation has higher and higher requirements for network intelligent autonomous management, and network autonomous topology planning is an important part of network intelligent autonomous management. The transmission channel is of great significance. [0003] Sinc...

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Application Information

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IPC IPC(8): H04W16/18H04B7/185
CPCH04W16/18H04B7/1851Y02D30/70
Inventor 乔梁燕洪成周晓懿徐勇余晟王帅周凡卉孙哲蕾郭坚汪路元
Owner BEIJING INST OF SPACECRAFT SYST ENG
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