基于人工噪声的二次雷达系统射频隐身技术研究  

Research on Radio Frequency Stealth of Secondary Surveillance Radar Based on Artificial Noise

作　　者：田芯瑞 何敏[1] 李强[2] TIAN Xinrui;HE Min;LI Qiang(Sichuan Jiuzhou Electric Group Co.,Ltd,Mianyang 621000,Sichuan,China;School of Information Engineering,Southwest University of Science and Technology,Mianyang 621010,Sichuan,China)

机构地区：[1]四川九洲电器集团有限责任公司,四川绵阳621000 [2]西南科技大学信息工程学院,四川绵阳621010

出　　处：《西南科技大学学报》2022年第3期70-76,共7页Journal of Southwest University of Science and Technology

摘　　要：探讨了人工噪声技术在二次雷达系统射频隐身技术中的应用。针对二次雷达系统所特有的发射模型与波形体制,结合人工噪声在时域与频域的特点,提出了全时段、脉冲内、全频段、带内4种人工噪声设计思路。通过对不同调制方式脉冲信号的仿真,对比4种人工噪声的包络、相关峰及频谱图仿真结果,证明了在幅度调制体制中全时段人工噪声隐蔽性能更佳,而带内人工噪声能更有效抵抗匹配滤波检测方式。总结了4种人工噪声设计思路的优缺点与最佳应用方案。The application of artificial noise technology in the radio frequency stealth technology of secondary surveillance radar system is discussed.Aiming at the unique emission model and waveform system of the secondary radar system,combined with the characteristics of artificial noise in the time domain and frequency domain,four design ideas of artificial noise as all-time,in-pulse,all-band and in-band are proposed.By simulating pulse signals with different modulation methods,and comparing the envelope,correlation peak and spectrogram simulation results of four artificial noises,it is proved that the all-time artificial noise concealment performance is better in the amplitude modulation system,while the in-band artificial noise can be more effectively resist matched filter detection method.The advantages and disadvantages of the four artificial noise design ideas and the best application scheme are summarized.

关 键 词：二次雷达 射频隐身 人工噪声 

分 类 号：TN973.2[电子电信—信号与信息处理]