Reserch And Hardware Implementation Of Radar Emitter Signal Sorting Algorithm

Since the modern battlefield's environment is becoming more and more complex,the radar signal sorting and identification technology,which become the key signal processing process in radar countermeasures system and become the important part in the radar confrontation information processing,are facing severe challenges.Only identifying and sorting out all sources accurately can we achieve precise strike and keep the advantage position in the battlefield.With the continuous development and progress of Digital Signal processing(Digital Signal Processor DSP)and large scale integrated circuit technology,it is possible to improve the performance of radar signal sorting using the pulse characteristics parameters in signals.And due to the development of the radar digital receiver technology,people can obtain almost all the information,e.g.,characteristic parameters,of the radar signal.Firstly,this paper introduces the composition and function of radar reconnaissance system,analyzes the composition of the Pulse description words(Pulse Digital Word PDW)and its role in the signal sorting,and studies different radar frequency signal types for different applications.Based on the study of the conventional Pulse repetition frequency(Pulse Recurrence Interval,PRI)radar separation technology,this paper analyzes the application environment and the advantages and disadvantages of each method.On the basis of the analysis of the wavelet transform,Fourier interpolation transformation method and support vector clustering algorithm,a sorting method based on the characteristic vector clustering is proposed in this paper.The method realizes the signal crisscross by applying the pulse characteristics parameters of the radar signal to the clustering algorithm.rThe experimental results show that the accuracy of the algorithm is high and the effect is good.Secondly,combined with the actual situation of the project,the proposed can be divided into two sections:hardware section and software section.The structure of this paper is as the following:Describe the concrete realization of signal separation processing platform.Set up the signal processing hardware research platform which is based on DSP TMS320C6678(8 nuclears,Keystone framework,TI)and FPGA EP3SL200(Altera).Introduce the functions of the important parts of the hardware platform and the realization of software design in detail.Finally,this paper studies the software design principle of the signal sorting and synthesis processor,the concrete implementation of sorting algorithm,and the working process.Meanwhile,this paper gives the function modules of the hardware implementation of the proposed algorithm.