Seung-Wu Rhee, Hak-Jung Kim and Joo-Jin Lee
International Journal of Aeronautical and Space Sicences, vol. 6, no. 1, pp.77-88, 2005

Abstract : KOMPSAT-2 is the second Korean earth observation satellite after KOMPSAT-1: the 1 meter GSD cartographic capability and planning to launch at the end of 2005 by ROKOT launch vehicle. The dedicated AOCS operational modes are designed for KOMPSAT-2 based on KOMPSAT-1 experience All of AOCS operational modes requires gyro information. To compensate this drawback, Power Safe Mode is designed and implemented. Successfully AOCS on-board software is developed and extensively verified through a nonlinear simulation process. The simulation results of Power Safe Mode and Science Fine Submode are provided to demonstrate its functionality as well as its performance.

Keyword : KOMPSAT-2, spacecraft, attitude & orbit control system, control mode, power safe mode, B-dot