Abstract:In order to realize the ground semi physical simulation test of satellite attitude and orbit control, an electronic satellite simulator based on LVDS (Low Voltage Differential Signaling) is designed, and the image resolution supports 1024 * 1024; The image bit width supports 12bit; It can upload and collect images with a frame rate of 10Hz. The star sensor is introduced into the control system as a high-precision attitude measurement component. The ground dynamics provides the quaternion to the electronic star simulator through Ethernet. The electronic star simulator transmits the generated electronic star map to the star sensor through LVDS. The real-time simulation verification system is composed of the control system, satellite computer and sensor system through the ground real-time system. The experiment shows that the output of the electronic star model is close to the target value, and the star sensor collects the accurate star map in the closed-loop test. The effectiveness of the above scheme is verified by the physical simulation in the closed-loop. Through the comparative analysis of indicators, it shows the feasibility of the electronic satellite simulator, which has good popularization in the ground semi physical simulation test of satellite attitude and orbit control.
