Abstract:In order to meet the demand of Mars mission of autonomous management and the requirements of high reliability, this paper designed a kind of closed-loop drive control method of GNC system for deep space detection spacecraft. Through routing technology, it makes the GNC system achieve each unit power distribution control, telemetry data acquisition and value actuation control. Compared with the traditional drive control mode, this method can effectively reduce the resource consumption of GNC computer, enhance the self- closing ring of GNC system, and reduce the cable connection complexity between system devices.