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This paper studies formation control of an arbitrary number of spacecraftbased on a serial network structure. The leader controls its absolute positionand absolute attitude with respect to an inertial frame, and the followerscontrol its relative position and attitude with respect to another spacecraftassigned by the serial network. The unique feature is that both the absoluteattitude and the relative attitude control systems are developed directly interms of the line-of-sight observations between spacecraft, without need forestimating the full absolute and relative attitudes, to improve accuracy andefficiency. Control systems are developed on the nonlinear configurationmanifold, guaranteeing exponential stability. Numerical examples are presentedto illustrate the desirable properties of the proposed control system.

Spacecraft Position and Attitude Formation Control using Line-of-Sight Observations