Satellite constellation system multidisciplinary design optimization method based on agent model

Abstract

The invention discloses a satellite constellation system multidisciplinary design optimization method based on an agent model, and belongs to the field of spacecraft constellation application. The method comprises the steps of on the basis of the Walker-delta constellation configuration and a small-sized earth observation satellite structure, establishing a key subject analysis model of the satellite constellation system by comprehensively considering the design requirements of the constellation configuration and a satellite subsystem; adopting a sequence radial basis function based on a support vector machine and a discrete-continuous variable sampling method and taking the satellite constellation system mass as an objective function to optimize a preselected design variable; mapping thediscrete variables in a continuous space through a discrete-continuous variable sampling method; replacing an original analysis model with an RBF agent model; identifying an interest interval by adopting an SVM (support vector machine), and performing sequence sampling in the interval to update and manage an RBF agent model, so that a design scheme which meets the requirements of constellation configuration and a satellite subsystem and has the minimum total mass of the satellite constellation system is efficiently obtained, the calculation cost of the satellite constellation system is furtherreduced, and the optimization efficiency is improved.

Description

technical field [0001] The invention relates to a multidisciplinary design optimization method for a satellite constellation system based on an agent model, belonging to the field of spacecraft constellation applications. Background technique [0002] Satellite constellation refers to a satellite network composed of multiple satellites according to certain rules and shapes that can provide certain coverage performance. It is the basic form of multiple satellites working together. In order to meet the wide range of needs in the fields of communication, navigation and earth observation, satellite constellation technology has received extensive attention. In the traditional satellite constellation design, the satellite subsystem is usually simplified to a particle, and the coupling relationship between the performance of the satellite subsystem and the configuration design of the satellite constellation is not fully considered, resulting in a low design confidence. In order to...

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Problems solved by technology

However, traditional evolutionary algorithms (such as genetic algorithm, particle swarm optimization algorithm, etc.) need to call thousands of analysis models to obtain the optimal solution, which is not suitable for multidisciplinary design optimization problems of satellite constellation systems involving time-consuming analysis models

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