A correlation method for radar and IFF in normal configuration
Yan Hong-xing · Electronics Optics & Control · 2008
In order to make full use of the information from IFF(Identification Friend or Foe) equipment to identify the target detected by radar is friend or foe,the problem of radar-IFF correlation in normal configuration(the azimuth of IFF respondent signals is the same to the one of radar returns) in Cartesian coordinate system is discussed.Based on chi-square distribution testing theory and n/m logic rule,a correlation method for radar and IFF in normal configuration in Cartesian coordinate system is presented.First,based on chi-square distribution testing theory,plane and space correlation discriminate function are constructed separately for 2D and 3D radar-IFF correlation,and the decision-making rule and the computation formula of decision thresholds are given.The regulation for ambiguity is also presented.Then,in order to improve correct correlation probability and reduce wrong correlation probability,the n/m logic rule is used.Finally,computer simulations are carried out and the results show that the method can obtain high correlation probability while keeping a low wrong correlation probability.