Abstract:

To complete target detection under the background of surface clutter, airborne early warning (AEW) radar commonly adopts the pulse Doppler (PD) system. However, the problem about the Doppler blind zone cannot be ignored. Based on the analysis of the character of surface clutter and the formation mechanism of the Doppler blind zone, a model for flight planning of low-altitude penetration is established. A fixed-time-step searching method is adopted to solve the model. On the route the fighter is invisible relative to the AEW radar using the Doppler blind zone. Moreover, low-altitude flight can avoid the detection of the radar above ground. Therefore, the route greatly increases the success rate of the fighter’s penetration. The simulation results demonstrate the correctness and effectiveness of the developed method for flight planning of low-altitude penetration based on the Doppler blind zone.