A High-Precision Analytical Solar Radiation Pressure Model for a GEO Large Antenna Satellite

Large space antenna satellites, as representative large space structures, exhibit complex dynamic characteristics under space environmental perturbations due to their unique configurations, affecting operational stability. To investigate the impact of solar radiation pressure perturbations, this study employs an advanced orbital prediction algorithm. Addressing the unique configurations and variable area-to-mass ratios of these satellites, an high-precision analytical solar radiation pressure model was proposed. This model optimizes the calculation of perturbation forces and accurately derives the relationship between area-to-mass ratio and solar incidence angle. Comparative simulations with a macro-model method verified the method's accuracy and effectiveness. The model also precisely calculates perturbation torque for complex antenna structures. This high-precision model enhances the understanding of large space antenna satellites' dynamics and provides critical support for orbit and attitude control.