The Flight Target Recognition Model Based On Credibility

Target recognition problem is a research field used widely,in which the identification of aircraft has an important application in military and aviation.On the one hand,the accuracy of the recognition method is a hot topic.At the same time,the credibility of the recognition results is also a problem that people pay more attention to.In this thesis,we study the problem of flight target recognition.The paper established a track detection model of flight target,and deal with leaks and waste of the data.Firstly,according to the motion of the object,the state equation is established,and the random noise is added,and the nonlinear state equation is discretized.Secondly,the observation equation of the two coordinate radar is established,and the equation is discretized.Finally,according to the state equation and the observation equation,the parameters of the Calman filter are initialized,and the detection process of the track maneuver detection is established.Another problem in this paper is the reliability of the results.Accor ding to the various conditions given by the track,three kinds of target recognition models based on credibility are established to adapt to different situations.The first two are based on the probability of the method,the statistical discriminant model is established.The third method is based on the fuzzy mathematical method,the recognition model of target aircraft based on membership degree is established.At last,the corresponding numerical experiments are given.Numerical results for a set of flight targets are given by using the method of the present paper.The numerical experiment results show that the discriminant method based on credibility for flight target is effective.