準天頂測位衛星初号機の姿勢軌道制御スラスタベクトルの最適化

摘要

The quasi-zenith satellite travels in the quasi-zenith orbit where the communication of a high elevation is provided abovethe region of Japan. The launch of the first title satellite equipped with the high accuracy positioning experiment isscheduled in 2010. Bus system of the first quasi-zenith satellite is developed based on MELCO standard bus DS2000.Attitude and orbit of the quasi-zenith satellite and other DS2000 satellites can be controlled by 12 22N thrusters.The quasi-zenith satellite performs only EW maneuvers for orbital maintenance. The thruster vectors are determined asminimized of the propellant consumption in consideration of plume impingement and ΔV coupling in EW orbit control,and installation restriction, etc.