In some areas, single radar has a short time to track an aerial target, and the dynamic characteristics of radar cross section (RCS) of the target cause the change of detection probability during the flight of the target. In order to solve these problems, a method for calculating the position of radar blind compensation is proposed. The relationship between stealth target RCS and detection probability is discussed and analyzed, and the blind compensation deployment model of single early warning equipment is established, and the optimal deployment position is calculated by particle swarm optimization algorithm. The simulation results show that the method greatly improves the ability of the radar network to grasp the target, and effectively ensures the continuity of grasping and tracking the stealth target.