PRI modulation recognition and sequence search under small sample prerequisite  

作　　者：ZHANG Chunjie LIU Yuchen SI Weijian 

机构地区：[1]College of Information and Communication Engineering,Harbin Engineering University,Harbin 150001,China [2]Key Laboratory of Advanced Marine Communication and Information Technology,Ministry of Industry and Information Technology,Harbin Engineering University,Harbin 150001,China

出　　处：《Journal of Systems Engineering and Electronics》2023年第3期706-713,共8页系统工程与电子技术（英文版）

基　　金：supported by the National Natural Science Foundation of China(61801143,61971155);the National Natural Science Foundation of Heilongjiang Province(LH2020F019).

摘　　要：Pulse repetition interval(PRI)modulation recognition and pulse sequence search are significant for effective electronic support measures.In modern electromagnetic environments,different types of inter-pulse slide radars are highly confusing.There are few available training samples in practical situations,which leads to a low recognition accuracy and poor search effect of the pulse sequence.In this paper,an approach based on bi-directional long short-term memory(BiLSTM)networks and the temporal correlation algorithm for PRI modulation recognition and sequence search under the small sample prerequisite is proposed.The simulation results demonstrate that the proposed algorithm can recognize unilinear,bilinear,sawtooth,and sinusoidal PRI modulation types with 91.43% accuracy and complete the pulse sequence search with 30% missing pulses and 50% spurious pulses under the small sample prerequisite.

关 键 词：inter-pulse slide pulse repetition interval(PRI)modulation type bi-directional long short-term memory(BiLSTM)network sequence search 

分 类 号：TN957.51[电子电信—信号与信息处理]