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Inter-satellite link scheduling method and system based on data driving

A technology of inter-satellite link and scheduling method, which is applied in the direction of transmission system, radio transmission system, electrical components, etc., and can solve the problems of high data transmission speed and low orbit

Pending Publication Date: 2022-07-29
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

Although low-orbit satellites have the advantages of low orbit, low signal delay and low attenuation rate, they have high requirements for data transmission speed and need to reach millisecond-level transmission speed

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  • Inter-satellite link scheduling method and system based on data driving
  • Inter-satellite link scheduling method and system based on data driving
  • Inter-satellite link scheduling method and system based on data driving

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Embodiment Construction

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] For the inter-satellite link scheduling problem, ISLSP, the present invention adopts a virtual topology strategy to discretize continuous time periods. Choose appropriate discrete granularity to build relational snapshots in the satellite network, each snapshot contains the information of all nodes. The time span between two adjacent snapshots is defined as one superframe (one scheduling period). In order to ensure that the topology snapshot is close to the topology of the actual constellation...

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Abstract

The invention provides an inter-satellite link scheduling method and system based on data driving, and the method comprises the steps: carrying out the discretization of a continuous time period, obtaining the state of a satellite on each time slice after discretization, i.e., a domestic satellite or an overseas satellite, taking the satellite on each time slice as a node, taking the data generated by the satellite as a commodity, and carrying out the processing of the data. A time-varying network multi-commodity flow model is constructed, and an inter-satellite link scheduling problem with a satellite space position continuously changing is converted into a multi-commodity flow problem with a time-varying characteristic, so that the inter-satellite link scheduling method is obtained. Experiments show that compared with other methods, the method provided by the invention has better optimization performance and quality, and the communication delay of 900 satellite constellations is reduced by about 40% under the condition that the communication quality is not influenced by taking the 900 satellite constellations as research objects.

Description

technical field [0001] The invention belongs to the field of satellite task scheduling and planning, in particular to a data-driven inter-satellite link scheduling method and system. Background technique [0002] Aerospace technology and wireless communication technology have developed rapidly, especially satellite resources play an important role in satellite Internet of Things, remote sensing telemetry, and navigation enhancement. At present, a single satellite resource can no longer meet people's actual needs, and it is necessary to use multiple satellite networking technologies to perform related tasks. For example, the GPS navigation system and the Beidou navigation system are composed of high-orbit satellites, medium-orbit satellites, and geostationary orbit satellites, which are used to perform global positioning and ranging tasks; the OneWeb constellation plan, the Starlink plan, and the Hongyan, Hongyun's satellite network construction plan mainly serves global com...

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Application Information

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IPC IPC(8): H04B7/185
CPCH04B7/18521Y02D30/70
Inventor 陈盈果杨青李远航杜永浩柳金明何磊贺仁杰姚锋陈宇宁吕济民刘晓路陈英武
Owner NAT UNIV OF DEFENSE TECH
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