Calculation and Simulation of the Position Area to Radar Using CEP

A new calculated method of the position area to radar is presented. The method is that the Circular Error Probability(CEP) of the smaller area is calculated using the parameters of the place of two and three radar devices. When CEP of some smaller area is less than or equal to the given value, the area belongs to the whole position area. By means of the method, the position area is gained and the position precision can be obtained.