Recognition of PRI Modulation Types of Radar Signals Using the Autocorrelation

Young-Jin RYOO  Kyu-Ha SONG  Whan-Woo KIM  

IEICE TRANSACTIONS on Communications   Vol.E90-B   No.5   pp.1290-1294
Publication Date: 2007/05/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e90-b.5.1290
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Sensing
electronic warfare support,  PRI modulation type,  classifier,  

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In electronic warfare support systems, the analysis of PRI (Pulse Repetition Interval) modulation characteristics for a radar pulse signal has attracted much interest because of the problem of the identification ambiguity in dense electronic warfare signal environments. A new method of recognizing the PRI modulation type of a radar pulse signal is proposed for electronic warfare support. The proposed method recognizes the PRI modulation types using classifiers based on the property of the autocorrelation of the PRI sequences for each PRI modulation type. In addition, the proposed method estimates the PRI modulation period for the PRI modulation type with the periodicity. Simulation results are presented to show the performance of the proposed method.