Nonlinear methods of high-accuracy spatial attitude control for a flexible
large-scale remote-sensing spacecraft are described. The effective damping
of oscillations within such a flexible structure, using gyrodines (single g
imbal control moment gyroscopes) with electromagnetic suspended rotors, is
also developed. Ultra-precise image motion stabilization is achieved by mov
ing image compensators in an onboard optical telescope. (C) 1999 Elsevier S
cience Ltd All rights reserved.