The rapid development of modern electronic warfare,represented by electronic interference,poses a serious challenge and threat to the working performance and survivability of radar systems.To realize the target reconnaissance function,modern radars generally use the corresponding electronic anti-jamming technology,which is essential for these radars to successfully complete tasks under complex electromagnetic interference conditions.Active spoofed jam-ming is an important form of electronic jamming,wherein the jammer receives the transmitted signal of the radar,modulates the signal,and forwards a signal similar to the real target echo.The radar then receives the false target echo,which causes it to misjudge the target or increase the radar tracking system's error.Wideband radar networking technol-ogy has been applied to areas such as anti-stealth,target recognition,and target information extraction.Most existing anti-jamming technologies orf networked radars focus on narrow-band networked radars.However,broadband radars have higher resolution,can detect more comprehensive information about the target,and achieve better anti-jamming ef-fects than narrow-band radars.For anti-spoofing jamming methods under wideband networked radars,existing studies directly compare the anti-spoofing jamming methods of narrowband radars,assuming that the echo vector of the real tar-get in each range unit is independently and equally distributed,and have not theoretically analyzed the internal reasons for the multi-view one-dimensional range image de-correlation.To address this issue,this study proposes a process for obtaining a multi-view one-dimensional range image via the projection of the three-dimensional scattering center model of the real target and analyzes the difference between the true and false one-dimensional range images in each radar sta-tion,as well as the homologous inconsistency of the real target in different wideband radars and the homologous consis-tency of the forwarded spoof-jamming in different wideband radars.Based on this difference,an anti-spoofing method that uses a one-dimensional range image correlation difference is proposed in broadband radar networking.The discrimi-nation statistics are designed,and the closed discrimination performance based on the cumulative distribution function is analyzed.Computer simulation results show that the proposed method can effectively address broadband spoofing inter-ference,and the discrimination performance is relatively more robust than the target size.
关键词
电子抗干扰/宽带组网雷达/抗欺骗式干扰/高分辨一维距离像/相关系数
Key words
electronic counter-countermeasures/wideband network radar/anti-deception jamming/high range reso-lution profile/correlation coefficient
维普
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