Abstract: The key equipment of full physical simulation experimentation of single satellite channel was single axis air bearing table,and research on dynamics control of its attitude was done,when its shafts were assumed to be absolutely vertical.However,gravity moment was produced by a certain tilt angle between the shafts in fact,and it had a long cycle effect on rotation of single axis air bearing table so as to influence precision of system control.Therefore,the corresponding mathematical model was established to take dynamic analysis,to carry on the feedback compensation of the gravity action and to design the attitude control system of air bearing table.On this basis,full-physical simulation had been done.