Operational effectiveness evaluation of phased array radar based on improved D-S evidence theory
Aiming at the influence of uncertain factors such as battlefield environment in phased array radar operational effectiveness evaluation,the improved Dempster-Shafer(D-S)evidence theory is adopted to optimize the operational effectiveness evaluation method.Firstly,the evaluation index system of operational effectiveness of phased array radar is established,and the evaluation index is defined and the assignment weight is given.Secondly,Kulsinski difference and fuzzy entropy method are introduced to improve the traditional D-S evidence theory and reduce the influence of the uncertainty of the fusion weight in the indexes fusion process.Finally,by improving the D-S evidence theory to fuse the evaluation indexes data,the operational effectiveness evaluation model of phased array radar with high accuracy is established.Through the verification and analysis of numerical examples,the proposed method can effectively reduce the influence of uncertainty in the fusion process,which achieves the objective of phased array radar operational effectiveness evaluation,and improve the accuracy of operational effectiveness evaluation.