NOVEL CONCEPT OF MICRO/NANO-SATELLITE SYSTEM DESIGN AND OPERATION ASSUMING ON-ORBIT RECONFIGURABILITY OF ATTITUDE DETERMINATION AND CONTROL SYSTEM

摘要

This paper proposes a new concept of satellite design and development performing many calibrationsreconfiguration of an attitude system in orbit. In previous works, some satellites employed on-orbit sensorcalibrations for higher accuracy than ground calibrations; however such on-orbit calibrations are for very limitedsensors and actuators during satellite operations. This research proposes a new concept "on-orbit reconfiguration"instead of the ground tests. This research has two objectives for the realization of the "on-orbit reconfiguration"concept. The first objective is to propose design methodologies to achieve the on-orbit reconfiguration quickly,safely and surely. This research makes clear requirements for a satellite system to achieve the "on-orbitreconfiguration" quickly with minimum operation time, safely with the avoidance of uncontrollable satellite states,and surely with minimum costs for grand tests to achieve precise parameter estimations. The second objective is topropose operation strategies to perform the on-orbit reconfiguration efficiently. This research simplifies operationsequence and performs sensitivity analysis of each estimation sequence. With simulation results, the paper concludesthat the proposed method has a potential to achieve more precise attitude control system with shorter developmentperiod.