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Development of a pulse repetition interval (PRI) modulation template using walsh- hadamard transform (WHT)

Abdul Ghani, Kamaruddin and Dimyati, Kaharudin and Sha'ameri, Ahmad Zuri (2015) Development of a pulse repetition interval (PRI) modulation template using walsh- hadamard transform (WHT). Defence S And T Technical Bulletin, 8 (1). pp. 42-50. ISSN 1985-6571

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Abstract

The classification of pulse repetition interval (PRI) modulation types using transformation techniques has some disadvantages, whereby PRIs can be misclassified. In this study, classification of PRI modulation types is done using the power spectrum of the Walsh-Hadamard transform (WHT). The generated spectrums are downsampled to reduce sampling errors and sub-harmonics, resulting in decimated Walsh-Hadamard transform (DWHT) spectrums. A template of DWHT spectrums is developed for the most common PRI modulation types, which are; constant, jittered and staggered. In this template, each pulse sequence is given a unique DWHT spectrum as its identity. The template can be used as rule-based classifier for accurate identification of signals.

Item Type:Article
Uncontrolled Keywords:Decimation rate, power spectrum, pulse repetition interval (PRI) modulation, walsh-hadamard transform (WHT)
Subjects:A General Works
ID Code:58282
Deposited By: Haliza Zainal
Deposited On:04 Dec 2016 12:07
Last Modified:30 Mar 2017 08:39

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