Search

For measurement problems of attitude and position parameters in the process of rendezvous and docking for spacecrafts, changes of intrinsic parameters of the camera mounted on the spacecraft in orbit under the influence of space environment are taken into account. A linear method is proposed and its main feature is in that the camera only shots three cursor images, without needing to know any geometric information of the group of the cursor points. By calculating the geometry of circle points, and establishing the constraint equations of the absolute conic on the camera intrinsic parameters, camera intrinsic parameters can be solved linearly. Simulation experiments show that the method is effective in the rendezvous and docking for spacecrafts. The calibration of camera intrinsic parameters has simple, real-time and robustness features. [ABSTRACT FROM AUTHOR]