The Research Of Pulse Signal Features And Emitter Identification

Minute features' analysis of pulse signals and cmittor identification are front edge topics in the electronic intelligence reconnaissance field.This thesis has a research on it and is significant in theory and practice.The thesis goes deep into the methods of the features analysis of pulse signals ,and study the methods of emitter identification.In Chapter 2,thrce nonstationary signals analysis methods which can be used in analyzing intrapulsc minute features are discussed, the merits and demerits are compared with.concrcte algorithm and the simulation results have been given.Chapter 3 presents the methods of the parameters extraction of signal envelop and frequency by intermediate frequency digital process tcchnology,discusses the problem of sampling rate,points out the influence of low sampling velocity in the analysis of signal minute featurcs,puts forward a cubic spline interpolation method to resume signal and analyze inlrapulsc modulation.Chapter 4 introduces the formats and pattern recognition flow of IFF signals,and discusses the IFF signals recognition in complex situation.In Chapter 5,according to the differences of enquiry and responding signals,lwo different methods in emitter recognition are brought forward,pattern classification idea and methods are also introduced,thc emitter recognition of responding signals can be realized by analyzing the signal codes and the statistical feature parameters.