Design And Achievement Of Battlefield Passive Radar Direction-finding System

As modern war field information is becoming more and more transparent,increasingly complicated electromagnetic environment, radar direction-finding systemunder the premise of keep its concealment, achieve high resolution, multi-targetsidentification, near real time communication and complex system of broadband radardirection finding. In order to meet these requirements, this paper studies a kind ofpassive radar direction finding system, first of all, the system adopts the design ofpassive radar, because it doesn’t radiate signals, so this guarantees its own well hidden.Secondly according to the number of signal source the system can be divided into twokinds of software processing mode, when there is only one target signal, in order toachieve the near real time communicationsupport,the system processoe adopts threedimensional baseline phase interferometer and classical MUSIC algorithm unionprocessing method; When the number of target signal is two or more, in order toachieve the target identification, direction finding system processor adopts the classicalMUSIC spatial spectrum estimation algorithm for direction finding. Finally,this paperadopts the MATLAB/GUI design to integrate the direction finding process into a formand operation interface is easy to understand. Based on three-dimensional baselinedirection-finding method and the classical MUSIC algorithm simulation analysis, thispaper studies the passive radar basic direction-finding system meet the requirements ofmodern radar direction finding system. The research contents of this paper not only hasimportant military significance, and modern direction finding technology of practicalapplication have been also the hot spot many scholars research in recent years.Specifically, this paper mainly studied the following aspects:First of all, in this paper, the basic theory of radar direction finding technology,three-dimensional baseline phase interferometer principle and solution of fuzzyprinciple and classical MUSIC direction finding algorithm basic principle and algorithmflow are studied;Secondly, based on the system software workflow, three-dimensional baselinedirection finding treatment work process and classical MUSIC direction findingalgorithm workflow three aspects,the system software design is discussed in detail, andthis article gives the corresponding software code; Moreover, in this paper, besed on the three-dimensional baseline phaseinterferometer direction finding,classical MUSIC algorithm and the classical MUSICalgorithm multi-target recognition, The experimental simulation and analysis of thespecific parameters is stuided;Finally, based on the MATLAB language, from the system main interface design,the main module design and callback program design three aspects, this article usesGUIDE to design the GUI of this system, at the same time,this paper tests the directionfinding performance of the interface system.