Analyzing space rapid response key technologies based on the data relay system

With high resolution satellites observation scope expanding, observation means increasing, observation data volume enlarging, all kinds of emergency tasks from military and civilian fields are more and more. The high resolution satellites need fast investigation, rapid mobility, rapid transmission and emergency rescue ability. Since 2008 China had successfully launched the first data relay satellite, the data relay satellite system has become the most important parts of China´s aerospace TT&C system. In order to give full play to the characteristics of the data relay satellites, this paper combs the user satellite emergency investigation, emergency orbit maneuver, emergency transmission, emergency rescue and other aspects of the space requirements of rapid response, analyzes automatic emergency response mode, integration of space-based & ground-based terminal design and attitude control method of abnormal space-based emergency key technologies. To enhance the rapid response ability of high resolution system lays a solid foundation.