Chinese Space Science and Technology ›› 2019, Vol. 39 ›› Issue (6): 21-.doi: 10.16708/j.cnki.1000-758X.2019.0046

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Attitude and orbit coupling control for fly-around observation of multi-satellite proximity operation

XU Ying, ZHANG Jin, YU Moyao, XU Dandan   

  1. 1School of Aerospace Science and Engineering, National University of Defense Technology,Changsha 410073,China
    2School of Aviation and Mechanical Engineering,Aviation Maintenance NCO Academy,Xinyang 464000,China
  • Online:2019-12-25 Published:2019-12-06

Abstract: Aiming at the observation mission of multi-satellite proximity operation, dynamics models of relative attitude and orbit are established. Two kinds of desired triangular formation configurations of observation satellites in elliptical and space circular orbits are considered respectively. The desired attitude is designed that the observation satellite's line of sight always points to the target satellite. The proportional-differential control law based on the quaternion and angular velocity error feedback and an improved guidance method based on artificial potential field method are used to control the relative attitude and orbit. The simulation results show that all observation satellites can effectively track the desired relative attitude and desired relative orbit under the action of the control law. In the triangular formation configuration of space circular orbit, after starting from the same initial position, the formation configuration of three observation satellites always keeps a regular triangle. Moreover, the side length of the regular triangle increases gradually from zero to finally the desired value.

Key words: multisatellite, proximity observation, attitude control, orbit control, regular triangle formation