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Spacecraft Position and Attitude Formation Control using Line-of-Sight Observations
This paper studies formation control of an arbitrary number of spacecraft
based on a serial network structure. The leader controls its absolute position
and absolute attitude with respect to an inertial frame, and the followers
control its relative position and attitude with respect to another spacecraft
assigned by the serial network. The unique feature is that both the absolute
attitude and the relative attitude control systems are developed directly in
terms of the line-of-sight observations between spacecraft, without need for
estimating the full absolute and relative attitudes, to improve accuracy and
efficiency. Control systems are developed on the nonlinear configuration
manifold, guaranteeing exponential stability. Numerical examples are presented
to illustrate the desirable properties of the proposed control system
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