The Research On Methods And Implementation Of Reconnaissance Guiding Jamming Based On Missile-borne Jammer

In modern warfare,missiles with characteristics such as long range,high accuracy and great power play a vital role.Their powerful strategic and tactical deterrent capabilities are valued by military powers.Since its target is usually located in the depth of the enemy and under a strict missile defense system,ensuring the successful penetration of the own missile has become the primary prerequisite for missile research.Research on the method and implementation of aircraft reconnaissance guidance jamming,briefly introduces the reconnaissance technology that can be effectively used for implementation,puts forward two guidance methods: reconnaissance precise guidance jamming and reconnaissance rapid guidance jamming,and innovatively adopts FPGA+Zynq hardware structure Carried out the realization of reconnaissance guidance jamming system.The main research contents and results of this thesis are as follows:1.The integrated structure of reconnaissance and jamming of the bomber jammer is analyzed.Two different reconnaissance structures based on digital channelization and intermittent sampling,and the measurement structure of radar parameters of the reconnaissance subsystem,are introduced in detail.The structure of the jamming subsystem is briefly analyzed.Finally,the guidance structure of the reconnaissance guidance jamming system structure is given.2.Combined with the engineering implementation background,for four modulation types concluding single frequency pulse signal,chirp pulse signal,two-phase and fourphase encoded pulse signal,a modulation type identification method based on multiphase differential is given.The technique of measuring intra-pulse parameters of different modulation signals is studied.On the premise of obtaining some radar signal parameters,the pre-sorting method based on dynamic distance clustering and the main sorting method based on sequence difference histogram are studied.3.The role of reconnaissance parameters in guiding interference is analyzed in detail,which conclude target radar signal power,pulse repetition interval,angle of arrival and carrier frequency mode.The network of selecting jamming pattern and the criterion of radar threat degree is constructed.According to the above mentioned,an accurate guidance method for guiding jamming based on four parameters which conclude target radar signal power,pulse repetition interval,angle of arrival and carrier frequency mode,and a fast guidance method based on fast reconnaissance structure and a few reconnaissance parameters are proposed.4.Using the new structure of FPGA+Zynq,an efficient hardware implementation platform is designed.The procedure flow of reconnaissance technology is given,combined with the advantages of Zynq chip to carry out efficient implementation research,and then the core module is tested.The reconnaissance guidance jamming system was constructed,and the problems and the solutions were introduced in the process of realizing it.Afterwards,it focused on implementing research on various system optimization methods,and on this basis,the system test was completed.Taking use of the Zynq chip that has just appeared in recent years,which reduces the data interaction between the boards and reduces the system power consumption.Using its internal programmable logic,you can customize the logic circuit to share the load,which greatly enhances the data throughput and processing performance of its ARM processor and improves the data transmission efficiency and control fluency.