In the process of scientific research validation for satellite navigation and control, indoor simulation experiments face a key technical challenge: how to achieve sub-millimeter, millisecond-level real-time precise tracking of a vehicle's 6-DoF (Six Degrees of Freedom) pose within the limited space of a ground-based environment, in order to simulate the spatial state changes it would experience during in-orbit operation. Traditional measurement methods find it difficult to achieve both high precision and real-time performance, which constrains the iteration efficiency of navigation algorithms and control strategies from simulation to physical validation.
To address these requirements, the research team from the School of Aeronautics and Astronautics at Sichuan University has introduced the CHINGMU optical motion capture system for indoor simulation experiments related to satellite navigation and control . This solution, by deploying multiple high-precision motion capture cameras, can perform sub-millimeter positioning and 6-DoF pose tracking of simulated vehicles or experimental models, and output key kinematic data such as spatial coordinates, velocity, acceleration, and attitude angles in real time.
