The principle of the despun digital control of a CCD camera is introduced

and a maximum rotational speed for assuring an ideal image in despun control system is obtained by analyzing the system. According to the speed of the despun control

a digital controller of camera for despun control system is design by taking a DSP as its core

a velocimeter as speed sensitive element to offer feedback for velocity loop in the system

and perturbation frequency measured by rate gyroscope as a feedforward function. The experiment results show that the velocity meets the demand of despun controll for its good image quality and the precision standard of 14.3(°)/s. Theoretical and lab researches both prove the feasibility of the despun control system.