Abstract: Direct wave and ground(sea) clutter is the important problem which airborne passive radar faced. Thus, This paper studies the clutter of the airborne passive radar based on digital radio and television signals using single frequency network(SFN) configuration.Firstly, a clutter model of airborne passive radar is built. Secondly, the space-time characteristics and the Doppler-range dependence of the clutter is emphatically analyzed. At last, the clutter data based on the digital radio and television signal which is SFN structure is simulated, the simulation results prove the validity of the model, and clutter suppression method in view of the clutter characteristics is proposed according to the simulation results. And these provide theory basis for the clutter suppression and target detection of airborne passive radar.