Inter-satellite link optimization method and system

Abstract

The invention relates to an inter-satellite link optimization method in the technical field of aerospace. The method comprises four steps of satellite orbit computing, satellite visibility judgment, inter-satellite transmission rate computing and optimum path selection. An inter-satellite link optimization comprises two parts of a data preprocessing module and a link selection module. The two modules are carried out according to a sequence, namely, the data preprocessing module is carried out firstly, and then the link selection module is carried out. According to the method and the system, aninter-satellite link optimization problem is divided into a time layer and a link layer. In a two-layer circulation mode, a transmission path with the maximum transmission rate at each moment withintask time is determined rapidly, the problem that a conventional optimization method is high in operation quantity and slow in solution speed is overcome, and the global optimum solution also can be ensured. According to the method and the system, through adoption of a modular thought, the inter-satellite link optimization system is provided. The system is simple in construction process and clearin input output interface. An inter-satellite link can be rapidly optimized.

Description

technical field [0001] The present invention relates to the field of aerospace technology, and in particular, relates to a method and system for optimizing an inter-satellite link. Background technique [0002] In recent years, with the continuous development of technologies such as high-resolution remote sensing and high-definition video live broadcast, the requirements for the transmission rate of communication satellites are getting higher and higher. How to make good use of existing satellite resources and realize the rapid transmission of inter-satellite data has become a A problem that needs to be solved. [0003] The transmission rate between satellites is related to many factors such as satellite distance, transmission power, transmission gain, and reception gain, and changes in real time with the movement of satellites. For a complex communication satellite network, there are often a large number of feasible transmission paths, and it is usually difficult to determ...

AI Technical Summary

Problems solved by technology

The present invention divides the optimization problem of the inter-satellite link into the time layer and the link layer, and quickly determines the transmission path with the highest transmission rate at each moment within the mission time through a two-layer cycle, which not only overcomes the traditional optimization method that has a large amount of computation and is difficult to solve. For slow problems, it can also guarantee to find the global optimal solution

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