恶劣传播环境下导航雷达个体识别方法研究  

A Study on Specific Emitter Identification Method of Navigation Radar in Harsh Propagation Environment

作　　者：常仁 柴恒 刘金生 周辉 CHANG Ren;CHAI Heng;LIU Jinsheng;ZHOU Hui(The Unit 32802 of PLA,Beijing 100080,China;The 723 Research Institute of China State Shipbuilding Corporation Limited,Yangzhou Jiangsu 225001,China)

机构地区：[1]解放军32802部队,北京100080 [2]中国船舶集团有限公司第七二三研究所,江苏扬州225001

出　　处：《现代雷达》2024年第11期45-49,共5页Modern Radar

摘　　要：由于港口等区域内存在大量建筑物,导致个体识别设备侦收的导航雷达信号受严重多径效应影响。为解决上述问题,文中提出了雷达基准时钟周期特征提取方法,并基于该特征在恶劣传播环境下对导航雷达进行个体识别。针对两部某S波段导航雷达的四种量程工作模式,进行了雷达重复间隔特征提取有效性验证,并构造了线性分类模型进行识别有效性验证,验证了基于基准时钟周期特征的个体识别方法应对恶劣传播环境的有效性。Due to the presences of a large number of buildings in ports and other areas,the navigation radar signals detected by specific emitter identification devices are affected by serious multi-path effects.In order to solve the above problems,a radar reference clock cycle feature extraction method is proposed in this paper,and based on this feature,the specific emitter identification of navigation radar is conducted in a harsh propagation environment.For the four quantum range working modes of two S-band navigation radars,the validity of radar repetition interval signature extraction is verified,and a linear classification model is constructed to verify the recognition validity,which verifies the effectiveness of the specific emitter identification method based on the base clock cycle feature against harsh propagation environment.

关 键 词：恶劣传播环境 导航雷达 个体识别 雷达重复间隔特征 

分 类 号：TN974[电子电信—信号与信息处理]