| With the increasing number and complexity of satellite missions,large-scale satellite group networks have become inevitable for future development.However,the traditional centralized ground mission planning has disadvantages such as low efficiency,poor timeliness,and low resource utilization.It is difficult to meet the needs of large-scale constellation task scheduling and resource management.On-orbit autonomous coordination between constellation satellites is a star the scheduling and management of the swarm provides a new solution.In this paper,the following researches are carried out on the autonomous coordination method of the constellation task:First of all,this article establishes the dynamic model of the constellation mission,introduces the definition of the time system and space system of the constellation mission,and the conversion relationship between the space coordinates.A satellite orbit prediction model considering the influence of the earth’s non-spherical perturbation,atmospheric resistance,sun and moon perturbation and sunlight pressure is established;the calculation model of the visible window of the target to the satellite and the satellite imaging attitude calculation model are established.Secondly,this paper establishes an overall framework for autonomous coordination of constellation missions.Taking Earth observation missions as an example,the constellation Earth observation missions and their preprocessing techniques are introduced in detail,and the constellation mission constraints and evaluation functions for constellation missions are established.Among them,the constellation task evaluation function part includes the evaluation of the constellation task completion degree,response time,profitability and load balance index,reflecting the effect of the constellation task autonomous coordination model;as well as the response time,attitude maneuver,and the evaluation of orbital maneuvering and task execution capability provides a reference for task assignment.Then,the research on autonomous collaborative model of constellation tasks based on nested multi-agent network was carried out,and the distributed satellite multi-agent network of nested contract network of friend network was designed.Any constellation satellite received the task through the friend network.Mission entrusted,the entrusted satellite will pre-process the mission and then form a contract network for the mission’s bidding process and perform meta-task assignment based on the bidding situation of each satellite.At the same time,a simulation experiment was designed and the simulation result was evaluated according to the task evaluation function.Finally,the research on the autonomous coordination model of constellation for emergency missions is carried out.For urgent observation missions that the constellation cannot cover in the short term,the constellation satellites achieve rapid coverage of the target through orbital maneuvering.The orbit transfer model of the worker bee colony algorithm calculates the speed increment required for the satellite orbit transfer at a specified time,and compares the speed increment of each satellite orbit change according to the principle of greed to realize task assignment.Finally,a simulation experiment was designed to verify the correctness of the model.This paper focuses on the research on autonomous coordination methods for constellation missions,and based on the planning of single-satellite autonomous missions,studies and establishes the overall framework of inter-satellite autonomous coordination for constellation missions,and studies the standardized description of constellation missions,constraint models,overall constellation mission execution and single-satellite mission execution capabilities.Evaluation method: Innovatively constructed a distributed satellite network based on nested multi-agents,and designed a universal constellation task autonomous coordination model based on this.Finally,as a supplement to the universal model in special circumstances,an autonomous constellation coordination model for emergency missions is established to realize the observation of areas that the constellation satellites cannot cover in the short term.Through simulation experiments,the constellation task autonomous collaboration model based on the nested multi-agent network in the article has a completion rate of 82.7% for randomly generated225 meta-tasks,a task revenue evaluation of 0.823,and a load balance evaluation value of 0.873,indicating that the model is obtained A better effect.The constellation autonomous coordination model for emergency tasks also achieves coverage of invisible targets within a specified time,and through optimization algorithms,it effectively reduces the growth rate of orbital changes and reduces energy consumption. |
