Abstract
<jats:p>With the continuous advancement of aerospace technology, low-Earth orbit (LEO) satellites are increasingly applied in communication, remote sensing, resource exploration, and meteorological monitoring. To enhance in-orbit asset utilization and improve on-orbit servicing capability, this paper proposes an integrated attitude–orbit control simulation framework for LEO satellite. A backstepping-based attitude control law is developed considering the nonlinear dynamics and mission requirements of the satellite, enabling autonomous attitude tracking of target satellites. In addition, a robust saturated proportional–derivative (PD) control scheme is designed to accomplish precise orbital maneuvers for proximity and circumflight operations. Numerical simulation results demonstrate the effectiveness and robustness of the proposed control strategies.</jats:p>