Multi-channel Digital Array Seeker Simulation System And Software Implementation

With the increasing complexity of modern war environment and the great threat posed by special aircraft,it is urgent to accelerate the research of digital array radar seeker technology.Digital array radar is active phased-array radar whose transmitted beam and received beam can be adopting digital beam forming technology.It can make full use of the array to improve detection performance that the traditional phased array radar cannot reach.And it has incomparable advantage on precision of guidance of the seeker.The design of this project is a multi-channel digital array seeker simulation system,which is suitable for the development and verification of multi-channel digital array seeker technology.In this thesis,parameterization modeling of simulation system related signals is introduced.The digital modeling of signals is the basis of the simulation of the whole system.The modeling signals include transmitting signal,noise,interference and clutter.The modeling method of array signal on array of different subarray is introduced.Then the simulation design scheme of the whole system is analyzed.Through the discussion of the working principle of the seeker,simply introduces the seeker's related algorithms in the signal processing and data processing.The algorithms mainly include matched filtering,adaptive and non-adaptive processing,signal detection,angle measurement,prediction and guidance,etc.It is the theoretical foundation of the system development.Then the software design scheme of the system is introduced.Through the demand analysis of the function of the system,the whole system is divided into several functional modules.The modules include system parameter setting module,system assist module,multi-channel phased array antenna module,signal module,signal processing module,tracking processing module,missile guidance module and output display module.Then,the class diagram design of each module is carried out to define the function and interface of the module.Then,in Visual Studio 2013 development environment,use C++ programming language to complete the seeker's modules of software development by calling the FFTW Fourier transform library,Armadillo matrix library,MKL function library and MFC interface library.Finally,the closed-loop debugging is completed by connecting each module.At the end of the thesis,the system debugging method is introduced,and the performance test and main function verification are carried out.After testing,the simulation system software can realize the basic function of seeker.By the high expansibility of software system,the self-definition of input parameters can be realized to achieve the simulation verification purpose of seeker's technology.