Research On Reconnaissance-interference Integration Technology Based On FDA

With the development of new technology revolution led by electronic technology,the military field has also ushered in a new mode of operation dominated by electronic confrontation,the jamming and counter-jamming of enemy radar under complex electromagnetic environment,reconnaissance and counter-reconnaissance has become a hot research field in many countries?With the continuous emergence of new system radars with higher detection accuracy,more sensitive detection ability and stronger anti-interference ability,as the electromagnetic environment becomes more complex,traditional interference and reconnaissance methods can no longer meet the tactical requirements of future battlefields.At the same time,the cost of modern interference reconnaissance platform is high and the combat effectiveness period is long,Improving the battlefield concealment of the platform itself and enhancing the sustainable combat capability have also become the key points that cannot be ignored.Therefore,it is of great significance to study the reconnaissance jamming machine that can deal with the complex electromagnetic environment.In this paper,the frequency array radar is studied in depth.an integrated reconnaissance and interference platform based on frequency diversity array(FDA)is proposed.A large number of simulations are carried out to verify the advantages of the reconnaissance-interference integrated platform based on frequency array.Firstly,the basic principle of frequency-controlled array radar is studied and the basic concept of frequency-controlled array radar is discussed,a detailed frequency array signal model is given,and then the principle of multi-carrier frequency array is extended.the beam diagrams of the conventional and multicarrier frequency arrays are presented respectively.Secondly,the common radar reconnaissance methods are studied,and the basic theories including direction finding,frequency measurement and radar signal detection are given,through a lot of simulation verification,the difference of direction finding performance between interferometer and MUSIC algorithm under different parameter background is analyzed,the performance of root-music algorithm frequency measurement and FFT frequency measurement under different backgrounds is compared,and the advantages of multi-array detection based on frequency array compared with single antenna detection.Thirdly,the basic theory of conventional jamming method is discussed,and with the advantage of multi-element multi-carrier of multi-carrier frequency control array radar,then,based on the combination of conventional jamming methods,the jamming methods for agile frequency conversion radar and pulse Doppler radar are proposed,through a large number of simulations,the effectiveness of the interference and the flexibility of selecting the type of interference are verified.Finally,the feasibility of Angle spoofing based on frequency array radar is proposed,the principle of Angle spoofing on direction finding system with specific amplitude method is given,through a large number of simulation verification,the interference effect of Angle spoofing on the direction-finding system under different parameters is analyzed.