An Algorithm For Radar Signal Sorting Based On Pulse Repetition Interval

At the age of information,radar signal sorting technology is an important part of electronic reconnaissance and a prerequisite for electronic warfare.And with the rapid advancement of radar technology,the large amount of equipment of the new system radar,and the large-scale use of some electronic interference and protection technologies.The current electromagnetic environment has become more and more complex and varied,from which each radar is sorted,It is a challenge.In this paper,we mainly use the pulse repetition interval(PRI),an inter-pulse parameter.The work done in this paper is as follows.Firstly,the development background of electronic warfare and the research status of radar signal sorting at home and abroad are introduced,and the electromagnetic environment currently faced is analyzed and summarized in detail.After that,the problems to be solved by radar signal sorting and the challenges are briefly introduced.The parameters used in radar signal sorting and the signal mode of PRI is introduced and analyzed in detail.Then some in-depth research and analysis of classical radar signal sorting algorithms are introduced,including several PRI estimation methods based on histograms,PRI transform methods and sequence search methods.Analyze the points of each algorithm from multiple angles.The characteristics of each algorithm are analyzed from multiple angles.A radar signal sorting algorithm based on pulse repetition interval is proposed,which introduces the idea of clustering when performing PRI estimation,which can accurately estimate the sub-periods corresponding to the staggered signals during PRI estimation and can process Modulation mode for fixed PRI and stagger PRI.Finally,through a series of experiments,the rationality of some choices in the algorithm flow is verified.The simulation results show that the algorithm performs well.