Design and Validation of SVOM on Board TT&C System

Design of SVOM satellite on board TT&C (Tracking Telemetry and Command) system is elaborated. In corporation with the ground TT&C network which includes both the Chinese and French ground stations, the on board TT&C system helps the mission achieve the GRB (Gamma Ray Burst) and ToO (Target of Opportunity) observation which is of an urgent time limitation less than 12 hours. The board to ground interface and strategy of telecommand uploading are introduced. Through the s-band test between the engineering model of on board equipment and the prototype of ground station, the effectiveness of the RF link and dataflow compatibility are measured and validated.