Relative dynamics modeling and simulation of double agile satellites' collaborative earth observation

In order to predigest the form of dynamics models and improve the efficiency of controller design, the relative dynamics is studied with double agile satellites' collaborative earth observation as the background and with earth observation range, method and cost-effectiveness ratio as the limitations. By means of dual-quaternion and its frame transformation, relative kinematics, dynamics modeling as well as model simulations, the feasibility of dual-quaternion is validated in modeling double agile satellites' collaborative earth observation in both theory and simulation. The simulation results show that the relative kinematics and dynamics equations of dual-quaternion can respond to the changes in forces and moments correctly.