Research On Node Scheduling Algorithm Of Fractionated Spacecraft Networks

The fractionated spacecraft network is considered to be the next generation of a distributed space system.Facing the fundamental challenges of dynamic time-varying characteristics and intermittent,the topology of the fractionated spacecraft network has become a hot area of research both here and abroad.This paper study the node scheduling algorithm by constructing the topology of the fractionated spacecraft based on the SINR(Signal to Interference plus Noise Ratio)and computational geometry theory.With the goal of the minimum energy consumption,the algorithms of it can be generalized as follows:Firstly,algorithms for calculating the probabilistic adjacency matrix are devised by analyzing the relationship among the elements of these matrices.Secondly,this paper realizes the research on the problem of the quadratic optimal control based on Clohessy-Wiltshire(C-W)equation and reduces the lowest energy consumption of the fractionated spacecraft.Then it gives the Riccati differential equation of the optimal control problem and the minimum acceleration.At last,this paper describes the “star” diagram reflecting the temporal-spatial evolution of the relationships among the spacecraft nodes.At the same time,the verification algorithms of connectivity and coverage are devised.Then it study the node scheduling algorithm of the fractionated spacecraft.