Research On Multi-star Multitask Planning Based On Contract Network Protocol

In recent years,with the rapid development of science and technology and the continuous progress of space technology,more and more satellites are launched every year,and more and more kinds of satellites are launched.In order to image the satellite mode,the traditional large satellite mode is gradually changed to the current constellation system mode.As satellite missions are becoming more and more complex,the traditional single large satellite model is no longer able to meet the needs of these missions,and multiple satellites are required to work together to complete complex tasks.The distributed satellite constellation system is unable to work cooperatively due to the distance between satellites,which is more like the scattered operation of multiple large satellites and does not form a team to work.Therefore,in order to solve these problems,countries began to study the distributed satellite system,and the planning of distributed multi-satellite multi-mission was also paid much attention by the public.This paper focuses on the task planning of distributed satellite system.The problem of task assignment and attitude planning for multi-point targets in distributed satellite system is emphasized to realize autonomous satellite scheduling.The distributed satellite system composed of satellites with different sensors is analyzed,assigned and imaged,which can complete the multi-target screening and assignment processing,and realize the autonomous multi-satellite to multi-task imaging function with less human intervention.Modeling for distributed multi-star multi-task planning method.Firstly,according to the requirements of satellite types and constraints of targets in the distributed satellite system,statistical analysis is carried out.Moreover,considering the practical engineering application mode,the planning problem is reasonably simplified and assumed,and the unified modeling of the task planning method is carried out to provide the model foundation for the subsequent algorithms.For the algorithm problem of distributed multi-star multi-task planning method,In order to solve the problem of time and efficiency in multi-mission planning of multi-satellites,the task assignment problem is solved based on contract network protocol.Firstly,the bidding and bidding relationship between satellite and target is constructed,and the corresponding model is established.Then,the corresponding bidding mechanism is established according to the satellite target attributes.On this basis,the task planning is solved.The mathematical simulation software of distributed multi-satellite multi-mission planning method is to facilitate the observation of data statistics and animation display of the satellite during mission planning.It provides some functions of setting target properties and satellite load,which is convenient for batch mission planning test.