The detection performance of single airborne early warning (AEW) radar is generally constrained by airspace covering blind area and Doppler blind zone (DBZ).A 3D model of the AEW radar detection range was established based on analysis to the airspace covering blind area and DBZ.Simulation results show that the 3D visualization model makes the airspace coverage of AEW radar for the targets at different heights in surveillance area more intuitive, and can produce the dynamic detection range of AEW radar.The multi-AEW radar cooperative detection can not only improve the airspace coverage of the surveillance area, but also make up the DBZ each other.