周生华1,,,
彭晓军2,
马晖1,
刘宏伟1,
苏洪涛1,
严俊坤1
1.西安电子科技大学雷达信号处理国家重点实验室 西安 710071
2.中国运载火箭技术研究院 北京 100000
基金项目:国家自然科学基金(62071345, 61701379, 61901344),国家****基金(61525105), 111引智基地(B18039),陕西省重点科技创新团队计划,中央高校基本科研业务费专项资金
详细信息
作者简介:王奥亚:女,1996年生,博士生,研究方向为雷达目标检测
周生华:男,1982年生,教授,博士生导师,研究方向为雷达组网、MIMO雷达、波形优化等
彭晓军:男,1973年生,副研究员,研究方向为精密仪器控制和雷达信息处理等
马晖:女,1989年生,副教授,硕士生导师,研究方向为涡旋波雷达、新体制雷达、无源雷达等
刘宏伟:男,1971年生,教授,博士生导师,研究方向为雷达目标分类与识别、认知雷达、网络化协同探测等
苏洪涛:男,1974年生,教授,博士生导师,研究方向为超视距雷达技术、雷达信号处理、自适应信号处理等
严俊坤:男,1987年生,副教授,博士生导师,研究方向为单站雷达智能信号处理、网络化雷达协同探测等
通讯作者:周生华 shzhou@mail.xidian.edu.cn
中图分类号:TN957.51计量
文章访问数:230
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被引次数:0
出版历程
收稿日期:2020-11-18
修回日期:2021-04-01
网络出版日期:2021-04-25
刊出日期:2021-10-18
Airborne Silent Radio Frequency Noise Shielding
Aoya WANG1,Shenghua ZHOU1,,,
Xiaojun PENG2,
Hui MA1,
Hongwei LIU1,
Hongtao SU1,
Junkun YAN1
1. National Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, China
2. China Academy of Launch Vehicle Technology, Beijing 100000, China
Funds:The National Natural Science Foundation of China (62071345, 61701379, 61901344), The National Science Fund for Distinguished Young Scholars (61525105), 111 Project (B18039), Shaanxi Province Key Science and Technology Innovation Team Project,Special Funds for Basic Scientific Research in Central Universities
摘要
摘要:为了规避敌方雷达对于己方战机的探测,该文提出一种战机发射射频掩护信号的方法。针对采用恒虚警类检测器(CFAR)算法的敌方雷达,己方目标发射的一定包络的掩护信号可以提升敌方噪声估计电平,达到使己方战机针对该雷达隐身的效果的同时,避免射频掩护电磁信号被敌方电子侦察设备截获,具体包括敌方雷达信号抵达目标时间估计,敌方探测能力评估,掩护噪声包络功率设计等步骤。基于单元平均恒虚警检测器(CA-CFRA),该文利用数值仿真分析了射频掩护包络和功率对掩护信号被截获概率及目标被探测概率的关系,表明该方法需要恰当的设计掩护包络和平衡信号功率达到更好的射频掩护效果。
关键词:电磁隐身/
静默噪声/
检测概率/
恒虚警检测器/
非相参检测器
Abstract:To avoid the detection to own fighters from adversary’s radar, a method is proposed in this paper, under which the fighter transmits radio frequency shielding signals. If Constant False Alarm Rate (CFAR) detector is used in adversary’s radars, adversary’s noise level of radar channel is overestimated when the fighter transmits the certain envelope radio frequency shielding signals by own fighters. The effect of making own fighters invisible to the radar is achieved while radio frequency shielding signals avoid being intercepted by adversary electronic reconnaissance equipment. For these purposes, it is needed to estimate the time of arrival of the adversary’s radar signal to the fighters, evaluate the enemy’s detection capability, and design the envelope and power of the shielding noise. Based on the Cell Average-Constant False Alarm Rate (CA-CFRA) detector, numerical simulation is carried out to analyze the relationship between the radio frequency shielding envelope and the interception probability of the shielding signal and the detection probability of the target. These simulation results show that the shielding method can achieve a better radio frequency shielding effect with properly designed shielding signal envelope.
Key words:Electromagnetic stealth/
Silent noise/
Detection performance/
Constant False Alarm Rate (CFAR) detector/
Incoherent detector
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