LEO and GEO Hybrid Orbit Satellite Communication System
Routing technology is a research hotspot in satellite communications. Literature [1] studied the routing algorithm of satellite communication systems with inter-satellite links; the literature selected the path according to the principle of the shortest delay, and studied the data report in low orbit LEO) The routing algorithm in the LEO satellite system; the literature studies the multicast routing algorithm of the datagram service in the LEO satellite IP network to improve the bandwidth utilization and reduce the delay; the literature studies two algorithms for implementing routing. The routing algorithm of the multi-layer satellite IP network is studied. The network includes LEO, Medium Earth Orbit (MEO) MEO, and Geostationary Earth Orbit (GEO) GEO satellites.
This paper builds a hybrid orbit satellite communication system with "Global Satellite System" (LEO) and geostationary satellite system (GEO), studies the routing algorithm of the system, analyzes and simulates the longest coverage time algorithm and the shortest path algorithm, and obtains two The performance of this algorithm in terms of route reconstruction rate and datagram loss rate under different business environments.
The hybrid orbit satellite communication system consists of a "global satellite system" containing 48 LEO satellites and two geostationary satellite systems. LEO has no inter-satellite links, while GEO has inter-satellite links. Each LEO satellite establishes a connection with a GEO satellite within its field of view (calculated at an elevation angle of 10 °) and a ground gateway station. The GEO satellite has an inter-satellite link with the LEO satellite within its coverage area but does not directly establish a connection with the ground gateway station .
In this system, each LEO and GEO satellite is a network switching node. The GEO satellite provides connection and information exchange to another GEO satellite and LEO satellite. LEO transmits information to users within its coverage. Communication between users located in different LEO satellite coverage areas is carried out through the inter-satellite link between the LEO satellite and the GEO satellite, and between the GEO satellite and the GEO satellite.
The longitudes of the two GEO satellites are 62 degrees east longitude and 134 degrees east longitude. The GEO satellite does not directly face the ground users, but only serves the LEO satellite, and forwards the LEO satellite data.
Research on Routing Algorithm of Hybrid Orbit Satellite Communication System
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