外场条件下辐射源脉内瞬时频率特征提取与个体识别有效性分析  

Emitter Intrapulse Instantaneous Frequency Feature Extraction and Individual Identification Effectiveness Analysis under Out-field Conditions

作　　者：胡瑾贤 高墨昀 王金锋[1] HU Jin-xian;GAO Mo-yun;WANG Jin-feng(The 723 Institute of CSIC,Yangzhou 225101,China)

机构地区：[1]中国船舶重工集团公司第七二三研究所,江苏扬州225101

出　　处：《舰船电子对抗》2020年第2期70-74,共5页Shipboard Electronic Countermeasure

摘　　要：辐射源个体特征提取是实现辐射源个体识别技术的关键和基础。提出一种基于瞬时频率的辐射源个体时频特征提取方法,并利用外场实测数据验证了辐射源个体瞬时频率特征的一致性和可区分性。试验结果表明,辐射源个体瞬时频率特征在普通脉冲信号和经过脉冲压缩的信号中均能够成功提取并实现对该类辐射源的个体识别,有潜力成为辐射源个体特征空间的一个重要维度。The extraciton of emitter individual feature is the key and base to realize specific emitter identification(SEI)technology.This paper proposes a method extracting the instantaneous frequency feature of specific emitter,and uses out-filed data tested practically to verify the consistency and distinguishability of the instantaneous frequency feature of specific emitter.The test results show that the instantaneous frequency feature of specific emitter can be successfully extracted and realized in the normal pulse signals and the pulse compressed signals,so has the potential to become an important dimension in the feature space of specific emitter identification.

关 键 词：辐射源个体识别 瞬时频率特征 脉冲压缩信号 外场条件 

分 类 号：TN971.1[电子电信—信号与信息处理]