Research On Cooperative Jamming Technology For Netted Radar

In recent years,the confrontation between the two sides of radar electronic warfare has become increasingly fierce,and various interference and anti-jamming methods have emerged one after another.The two sides continue to chase the goal of obtaining effective information on the battlefield,hoping to control the dominance of the war.Netted radar technology was born under this background.In the face of the powerful detection performance and anti-interference ability of netted radar,ordinary jamming technology is almost ineffective.Therefore,this paper designs coordinated distributed interference for netted radar,which improves the utilization efficiency of the interferer resources.The main research content of this article is introduced below.First of all,taking the radar system itself as the research object,this article analyzes the composition of the radar system and several key indicators that affect the performance of the radar,focusing on the radar range and constant false alarm detection technology.Then,on this basis,the principle of radar jamming signal generation is analyzed,focusing on suppressing jamming,deception jamming,and dense false target jamming technologies.Aiming at the problem of excessive regularity of general false target signals,proposed intermittent non-uniform sampling and repeated stacking and forwarding interference technology,simulation results show that it significantly reduces the probability of real targets being detected by radar.Secondly,on the basis of studying the jamming signal of a single radar,analyze the jamming technology for the networked radar.Taking the detection range as an example,the performance changes of the networked radar after multi-jammer interference suppression are analyzed,and then the principle of multi-jammer cooperative deception interference is analyzed,and the design requirements of the position and delay of the jammer are clarified.On the basis of the above,research the jamming strategy for the networked radar,propose a composite noise jamming technology,and proposed the track deception strategy for the networked radar,find the best track through the heuristic search algorithm,and penetrate for the multi-aircraft coordinated defense foundation.Thirdly,it studies the interference effect evaluation technology for networked radars.Aiming at the problem that the multi-to-many interference effect evaluation method is not comprehensive enough,the evaluation indicators such as threat level change,detection probability,positioning accuracy,tracking accuracy are selected,and then specific quantification method and the calculation method before and after the interference are put forward,and the evaluation model and objective function of the effect of multi-jammers interfering with multiple radars are established,and the rationality of each index is verified through simulation.Finally,based on the known interference effect evaluation function,a method of constructing an optimal interference effect matrix is proposed,and a mathematical model of interference resource allocation under constraint conditions is established,and next find the best interference resource allocation plan through intelligent optimization algorithms.The main research algorithms in this paper are genetic algorithm and ant colony algorithm.Starting from the principle,the advantages and disadvantages of the two are anal yzed in detail and improved,and then the genetic-ant colony fusion algorithm is proposed.The simulation results show that the fusion algorithm has strong stability,fast optimization,and strong feasibility.