Research on the approach for calculating the probability of detecting an aircraft by radar system

The purpose of this paper is calculating the detection probability of an aircraft traveling near an opponent multi-radar system. Based on the aircraft RCS (radar cross section) model, flight route, radar character parameter and locations, detection times of sub-radars and detection state parameters are calculated. Furthermore, the instantaneous detection probabilities of each radar are given. Then, the accumulated detection probability is calculated. At last, multi-radar system detection probability is obtained. The method here takes into account the aircraft RCS changing with the different detection attitudes; this is more precise than the method which considers the RCS as constant. The accumulated detection probability is used to replace the traditional instantaneous detection probability; so the result got here is the probability of the whole flight process. Taking multi-radar as a detection system is more suitable for the further development of radar. The numerical result shows that the method is effective and feasible.