The Design Of Anti-interference Technology Based On DRFM And Its Monitoring System

With the continuous progress of radar information technology,the future victory of the war depends more on the ability to confront information.Since its inception,electronic confrontation,especially between the radar is quite fierce,all kinds of new weapons need to use radar to detect,interfere with,damage the enemy radar and its weapons system,only to maximize the use of radar system and access Of the information in order to improve the radar anti-interference ability,and then adapt to the complex and changing battlefield environment.Based on the study of the characteristics and generation of DRFM noise suppression and deceptive interference,the corresponding anti-jamming simulation is carried out for each jamming method,and a radar signal monitoring system is designed to more easily and intuitively monitor the radar jamming signal and target Echo signal,which is conducive to monitoring.Mainly include the following aspects:(1)This paper introduces the working principle of DRFM,and then analyzes the DRFM quantization methods(including: single channel amplitude quantization and orthogonal dual channel amplitude quantization),and analyzes the DRFM storage methods(including: all pulse storage,pattern pulse storage and slow refresh rate pulse storage)Finally,the main indexes of DRFM interference are studied and their characteristics are analyzed.(2)This paper introduces the classification and generation of noise suppression interference,analyzes the characteristics of amplitude modulation interference and FM interference,and analyzes the two interference signal generation processes respectively.On this basis,it studies the anti-amplitude interference and wavelet transform of frequency cancellation Anti-FM interference algorithm,and through simulation to verify the feasibility of anti-jamming method.(3)This paper briefly introduces the principle of deceptive interference and analyzes the effect of deceptive interference on radar.Then it briefly introduces the main styles of deceptive interference,and then briefly analyzes the SV-LFM signal and its characteristics.On this basis,it studies the anti-Algorithm and anti-distance gate drag interference,and focus on the direct pulse matching method and three-step matching filter algorithm,through the simulation experiment to verify the algorithm to verify the feasibility of the algorithm.(4)According to the radar anti-jamming designs of a monitoring signal system,the use of.Net platform to build the environment,the system introduced the overall idea and system structure,the radar received transmission signal storage,and then parse the XML file to obtain signal parameters displayed in the list or graphics,The need for further analysis of the signal can be stored in the database,you can quickly find the query through the query tool,you can also re-placed in the list or graphics for playback.Finally,based on the anti-distance deception jamming of direct pulse matching method,the feasibility of the designed radar signal monitoring system is verified.After several debugging,the target signal is reached and the interference signal is suppressed.Finally,the algorithm of anti-noise suppression interference and anti-deception jamming is verified by simulation,and the feasibility of the system is compared with that of the designed radar anti-jamming signal monitoring system,which is in accordance with the requirements of anti-jamming.