Satellite constellation network different orbit link planning method

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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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 difficulties in satellite network management; "A time-varying inter-satellite link network topology planning for satellite navigation system" proposed by Shanghai Microsatellite Engineering Center Method" (CN201910474731.2) tries to plan the topology of the dynamically changing space network, but this method does not specify the target antenna for the link antenna selection, which will easily lead to frequent link switching and unstable space network topology

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