Medium-orbit relay communication networking satellite system and communication method

Abstract

The invention provides a medium-orbit relay communication networking satellite system and a communication method. The system at least comprises a medium-orbit relay satellite constellation, a ground station and an operation control system, the medium orbit relay satellite constellation comprises nine relay satellites on three orbit planes, the three relay satellites on each orbit plane are uniformly distributed, and the included angle between the three relay satellites and the earth center connecting line is 120 degrees; the three orbital planes are perpendicular to one another, one orbital plane is an equator orbital plane, and the other two orbital planes are polar orbital planes; every two relay satellites in the same orbit plane communicate with each other through an inter-satellite laser link, the relay satellites communicate with a ground station through a satellite-ground microwave link, and the relay satellites are both located in a medium orbit range. The satellite system provided by the invention can provide corresponding access services for a plurality of low-orbit spacecrafts with different data rates and different orbits; a high-real-time, high-coverage and multi-user space-based measurement and control and data transmission system is established without depending on an overseas satellite ground station, and the 100% global coverage real-time communication capability is achieved.

Description

technical field [0001] The invention relates to the technical field of satellite communication, in particular to a mid-orbit relay communication networking satellite system and a communication method. Background technique [0002] Since the first artificial satellite was put into space on October 4, 1957, human beings have never stopped exploring outer space, especially the space near the earth and the moon. So far, most of the spacecraft that have been launched are located in this space. Build a large number of ground stations to provide measurement and control and data transmission services for spacecraft. However, due to the short tracking time of the ground station on the Low Earth Orbit (LEO) spacecraft, it is difficult for spacecraft users to deploy ground stations around the world for on-orbit management of the spacecraft, making the on-orbit management of the spacecraft face challenges. The problems of low efficiency and poor real-time performance make it difficult ...

AI Technical Summary

Problems solved by technology

However, due to the short tracking time of the ground station on the Low Earth Orbit (LEO) spacecraft, it is difficult for spacecraft users to deploy ground stations around the world for on-orbit management of the spacecraft, making the on-orbit management of the spacecraft face challenges. The problem of low efficiency and poor real-time performance, and the rate of data transmission is also difficult to improve

[0003] The relay satellite systems in related technologies are all designed and constructed based on the geostationary orbit (Geostationary Orbit, GEO) orbit. The size, weight, power consumption and launch cost of the satellite are high. Due to the long distance from the low-orbit spacecraft, the user terminal The requirements are also very high, especially for the construction of more and more large-scale micro-satellite constellations, more GEO-based relay satellite systems need to be established, and the demand for user terminals is also increasing simultaneously, and the demand for user terminals The hardware requirements are also higher, which will cost more expensive component-related supporting facilities

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